Sir William Brownlow, 1st Baronet

He was educated at St Mary Hall, Oxford, where he graduated with a Bachelor of Arts in 1610 or 1611.^{[citation needed]} In 1617 Brownlow was called to the bar by the Inner Temple.^{[citation needed]} Despite having been created by King Charles I a baronet, "of Humby, in the County of Lincoln", on 27 June 1641,^[3] one day after the baronetcy of his elder brother, he became a Parliamentarian during the Civil War.^{[citation needed]} From 1653 he sat in the Long Parliament for Lincolnshire.^{[citation needed]}

In about 1624 he married Elizabeth Duncombe, daughter of William Duncombe, and had by her a daughter and a son:

• Sir Richard Brownlow, 2nd Baronet (d.1668) of Humby, who succeeded to the baronetcy.^{[citation needed]}