Sir William Maynard, 1st Baronet (6 October 1641 – 7 November 1685)[1] was an English politician and baronet.
He was the third and eldest surviving son of Charles Maynard and his wife Mary Corsellis, daughter of Zeager Corsellis, of London.[2] His uncle was William Maynard, 1st Baron Maynard.[2] On 1 February 1681, Maynard was created a Baronet, of Walthamstow, in the County of Essex.[3] In April 1685, he entered the English House of Commons as a Member of Parliament (MP) for Essex, but died seven months later.[4]
He married Mary Baynbrigg, daughter of William Baynbrigg, and had four sons and three daughters from her.[2] Maynard died in 1685 and was buried at his seat in Walthamstow.[5] He was succeeded in the baronetcy successively by his sons, William II, 2nd Baronet and Henry, 3rd Baronet.[5]