Background
He was the second son of Richard Brownlow and his wife Katharine Page, daughter of John Page.
He was the second son of Richard Brownlow and his wife Katharine Page, daughter of John Page.
He was educated at Street Mary Hall, Oxford, where he graduated with a Bachelor of Arts in 1610 or 1611.
In 1617, Brownlow was called to the bar by the Inner Temple. Despite having been created a Baronet, of Humby, in the County of Lincoln on 27 June 1641, he was a Parliamentarian during the English Civil War. From 1653, Brownlow sat in the Long Parliament for Lincolnshire.