He was the third son of Sir Edmund Molyneux, a justice of the Court of Common Pleas by Jane, daughter of John Cheney of Chesham Bois, Buckinghamshire.
[1] Thomas Tanner, citing 'Cabala; mysteries of state, in letters of the great ministers of K. James and K. Charles' ed.
[2] Edmund Molyneux became secretary to Sir Henry Sidney, and accompanied him to Ireland, where he acted as clerk of the council.
On 20 September 1576, he wrote a long letter in his favour to Burghley,[4] and in November 1576 vainly asked the privy council to appoint Molyneux, along with another, supervisor of the attorneys, who had 'grown very crafty and corrupt'.
1548-56), in which he complained that Sir Henry Sidney, however he might strive, never succeeded in obtaining for him a comfortable office or reward of any kind.