Péter Schumann's father János Schumann [hu] was also a professional football player, playing for Dózsa Újpest but the family soon relocated to Budapest after World War II.[7] Despite this though, Péter stated that his father's career was not the primary source of inspiration for him to pick up football as it came from playing the sport with other family members. He was also classmates with fellow footballer György Gálhidi at school.[1]
Following his football career, fellow footballer Lali Buza convinced him to become a parking attendant where he remained employed at various locations for the next fifteen years. Around this time, Schumann was married and had a daughter, but he and his wife were later divorced. Former Újpest footballer Gyula Bánka later gave Schumann another job opportunity at his injection moulding shop in 2000. In 2003, while playing a game of football, he broke his left foot. Initially, he treated the wound but with persistent pain, he eventually checked himself at Újpesti Szakorvosi Rendelőintézet Budapest where he was later diagnosed with severe vasoconstriction and his foot was amputated due to no signs of life within the blood vessels. Schumann continued working with an artificial limb until his other leg also began experiencing similar symptoms. From 2014, Schumann was bound in a wheelchair[8] and would later visit his grandson of one year old.[9] Despite some newspapers describing Schumann as being suicidal over his life circumstances, he denied these claims, maintaining an optimistic outlook.[10] He also maintained a friendship with Ede Dunai who wrote a biographical novel about Schumann titled Egy megcsonkított élet.[1] In 2023, Schumann made a guest appearance at Újpest TV.[7] Prior to his death on 5 April 2024, Schumann was set to meet his newly born granddaughter for the first time according to Dunai.[5]