The Ngulu historically had no centralised governmental structure; instead, each small group was run autonomously by a notable matrilineage and was mostly linked via affinal ties and marriage alliances. These family relationships were reflected in the strong social ties of some matrilineages. A senior member of the primary matrilineage or the founder of the community, known as a kaya or mzi, served as its leader. Although they are currently referred to as tnfurna or mndewa, formerly local leaders known as zumbe held office. Although sons of former leaders occasionally held temporary positions, the majority of leadership succession was matrilineal.[18]
A reputation for involvement in slavery was bolstered by the fact that many Ngulu people actively participated in trade during the Arab trade period and occasionally took part in armed expeditions, which included the purchase and selling of captives. More ambitious but erratic leadership was fostered by this period of commerce and fighting, including a weak chief who was well-known in the area at Maskati in southern Ungulu. Much of the Ngulu lowlands was later conquered by a strong Lufuru, self-made leader-raider from Morogoro who demanded tribute from the other regions. [19]
The Ngulu are mostly hoe farmers but also raise poultry, livestock and goats. In the northwest, some Ngulu raise cattle. Their agriculture is based on a variety of land uses: valley land is continually cultivated, higher portions are utilised for shifting cultivation, and smaller gardens are close to households. Some land in mountainous locations is almost always cultivated, but cultivation is sparse in plateau areas during the dry season. Maize, millet, and sorghum are their principal crops, along with beans, pigeon peas, bananas, sugarcane, cassava, castor, groundnuts, sweet potatoes, pumpkins, and fruits. Some mountainous locations cultivate rice. Cash crops include maize, beans, tobacco, and, to a lesser extent, coffee and cotton. They also practise minor irrigation in hilly areas.[20]
Ngulu farmers used to farm using digging sticks and hoes, and they hunted with bows, poisoned arrows, spears, and, more recently, shotguns. They use a variety of techniques to catch birds and other animals. Men clear fields, grow most crops, hunt, fish, and build tools, whereas women cook, collect water and firewood, care for children, and make pottery, baskets, and maize or millet beer. Ngulu creates wooden beehives and raise bees for honey and wax. They had iron ore in the highlands and have traditionally smelted iron using leather bellows to make iron tools and weapons that they traded.[21]
In addition to being famous traders who sell tobacco, metals, crafts, and food in nearby places, they are also expert woodcarvers of stools, combs, tool handles, and musical instruments. Although nearby tribes frequently seek them out as herbalists and diviners, they typically have little interest in wage work. The homes of the Ngulu are rectangular, beehive-shaped, or sometimes traditional tembe. When they build houses, they have kuzenga, or beer celebrations. Although some formerly constructed separate raised granaries or kept grain inside sizable bark containers, the majority now store grain in granary chambers on top of their homes.[22]
According to McVicar, it was customary for women to avoid getting pregnant within the first three or four months of marriage since it was thought that the kid would be slain. Beidelman points out that this technique was probably uncommon in the past and is no longer practiced now. It was recommended that men refrain from having sex with their spouses until the child's first teeth erupt. Because these items were believed to be harmful to the developing infant, pregnant women may avoid eating swine, sheep, eggs, and twin bananas. Additionally, they avoided contact with youngsters while pregnant.[23]
To become pregnant, some Ngulu women turned to diviners for help. When pregnant women taking fertility herbs did become pregnant, they frequently waited until after giving birth to engage in sexual activity and grew their hair long. Additionally, they can subsequently permit a topknot to develop on their child's head. Joking partners would occasionally leave or murder children who were born by girls before completing initiation or who were born under specific bad circumstances, such as twins, breech births, or infants who cut their top teeth first.[24]
It is not until a youngster has cut its first teeth that it is considered completely human. A matrilineage elder then shaves the youngster's head and presents the child with a toy bow for boys or beads for girls. A Ngulu elder shaves the first child, while a paternal relative shaves the second, according to some Ngulu who think this "kumoga" shaving ritual is only done for the first two. Around the age of eight or nine, girls participate in a ritual known as magutwi, which also includes getting their ears pierced. Typically, little beer parties are held to commemorate all of these rituals.[25]
Between the ages of 12 and 16, Ngulu boys go through initiation, typically in a group setting at a forest camp known as Lago. The initiation hut (kutnbi) is the inspiration behind the name of the initiation procedure. In order to represent a rebirth and purification from immaturity, the boys are shaved, bathed, and then circumcised by a healer (mwana bakwa) while naked. They are covered in ashes and taught about sexual behaviour and tribal customs by older males and peers during a time of seclusion when they are kept apart from women. Frequently, this is done through songs and riddles (mizimu). Additionally, a fake lion that is utilised in bush hideouts frightens and hazes them.[26]
The ceremonies balance masculinity and femininity by highlighting Ngulu principles of fecundity and social order. The camp supplies are set on fire after the boys recover, and they return home with new attire, new names, anointing, and festivities that include dancing and feasting (mvungu). After that, they permanenlty live apart from their parents in a bachelor hut (gane).[27]
For weeks or months following her first menstruation, a Ngulu girl is secluded to her grandmother's home. A washing procedure known as kuhoza (to wash) and a labiadectomy are carried out at this period. The guluwe, a rite performed exclusively by women that includes mkumbulu (headmat) and pretend pig hunts, is the main celebration of her maturity. While keeping the girl apart from men, elder women teach her through songs (mizimu), riddles, and tribal lore.[28]
These rituals, which frequently involve acts that are symbolically antagonistic against men, represent a variety of feminine attributes. During her training, a faux lion may frighten the girl, known as Mwali. She is first exposed to society in a ritual called mlao (emergence), where she openly introduces herself to men, after her training is finished and the initiation instruments are burned in a rite called kizelu (ashes). In the past, girls frequently got married shortly after this event.[29]
Ngulu male adolescents start marriage talks by offering a girl beads (kasalu); if she agrees, he uses a mediator to make arrangements with her family by offering a male relative beads (kilumba). Ngolola lusona (for marriage), nemsasa (to the mother's brother, formerly a hen), mseturo (to the father, formerly a cock), and kibanyo (to the father) are some of the contributions that make up bridewealth (itundu), some of which are borrowed from nearby ethnic groups. These payments were traditionally modest, usually consisting of a few goats, poultry, and metal wire, and they mostly concerned maternal relatives. By the 1950s, the majority of payments are made in cash, sometimes amounting to several hundred shillings or twelve goats.[30]
In the past, bridewealth was paid in installments, and couples frequently stayed with the bride's family until all of the payments were made. Bride services were also frequently provided. Cross-cousin marriages necessitated residential exchanges and brideservice but involved reduced bridewealth. Nowadays, illicit "key-money" is occasionally given at weddings. Previously, forming alliances with unrelated matrilineages required paying a small charge known as situla mkomba.[31]
The majority of Ngulu males have always sought to live with their maternal kin. In the communities where their wives were born, younger men usually lived with them or occasionally paid them a visit. Younger family members of both sexes could be kept in their native villages by prosperous older men. Nowadays, a large number of Ngulu couples reside in their own homes apart. All Ngulu used to live in villages with palisades or fences around them, but by the 1950s, most of them live in smaller communities, with many couples residing in separate homesteads.[32]
A divorce can be filed by any spouse, and the bridewealth is always returned, less any deductions for the husband's children. The sororate technique, which only required a tiny additional payment, was only utilised in cases where a woman died early. The deceased's matrilineal kin inherited widows, and bridewealth was returned if the widows decided to return to their own kin. Matrilineal relationships were used to settle bloodwealth (kimba), which was primarily paid by the victim's family and received by the offender's family. In the past, this frequently involved huge payments of slaves and cattle. Bloodwealth payments are not made today.[33]
While some Ngulu maintain that originally both partners paid the fee, others maintain that only the male adulterer is accountable. The ndaa, which is paid if a woman becomes pregnant outside of marriage, is different from the fine, called henga. The woman's maternal and paternal relations retain the rights to the child born from such an act unless additional payments are made to protect those rights. In the past, adulterers may have killed a chicken and painted the woman with its blood as a purification ceremony.[34]
Violating sexual or marital laws is seen as a threat to the supernatural well-being of the kinship group, and incest between close relatives is seen to be similar to witchcraft, or usawi. Such transgressions, referred to as ngelesanyi, necessitate ceremonies to appease ancestor spirits; they typically entail killing a sheep and covering the perpetrators with its blood and stomach contents. Sleeping with two people of the same matrilineage is the most frequent incestuous offence.[35]
Traditionally, males would make blood covenants, or soga, by consuming each other's blood, which was applied to a dead sheep's liver. These ties were regarded as unbreakable and established solid reciprocal commitments to support and assistance. It was thought that if these agreements were broken, supernatural energies in the blood would bring death. These covenants have historically been important in social and economic ties because they were mainly created to provide assistance and refuge during commerce.[36]
Usually soon after death, the Ngulu bury their deceased in the forest close to their dwellings, wrapping them in cloth and banana leaves. The joking partners (watani) mark the grave with stones and banana leaves, and the body is buried with its feet looking westward, with the women on the left and the men on the right. The deceased's family members stay inside and refrain from going to work for the next three days as they conduct rituals of purification over the grave.[37]
Joking partners and distant family members tend to their needs during this time, and they also host a wake (choto) to reveal the cause of death. On the third day, they reignite the home fire, instruct the mourners how to do household chores they had been avoiding, and purify the home and bereaved family members using water and herbs.[38]
Seven days later, the joking partners monitor the widow's return to her family, shave and anoint the mourners, and supervise the property distribution. A funeral feast (matanga) marks the conclusion of the mourning period, and libations are poured over the grave.[39]
After the period of mourning is over, the family members seek the advice of diviners to ascertain the reason of death. Occasionally, it is thought that spirits occupy the living or bring bad luck, which leads to additional divination to put the spirit to rest. In the past, those who died from blood-related illnesses like leprosy were frequently cast into the wilderness.[40]