On 10 Aug 1644 William Sydenham Soldier (age 29) and Anthony Ashley-Cooper 1st Earl Shaftesbury (age 23) captured Wareham, Dorset [Map].

In Nov 1645 William Sydenham Soldier (age 30) was elected MP Melcombe Regis.

On 14 Aug 1649 William Sydenham Soldier (age 34) and Colonel Fleetwood were appointed Governor of the Isle of Wight.

Pepy's Diary. 17 Jan 1660. Thence I went to Westminster, and met Shaw and Washington, who told me how this day Sydenham (age 44) was voted out of the House for sitting any more this Parliament, and that Salloway was voted out likewise and sent to the Tower, during the pleasure of the House. Home and wrote by the Post, and carried to Whitehall, and coming back turned in at Harper's, where Jack Price was, and I drank with him and he told me, among other, things, how much the Protector (age 33) is altered, though he would seem to bear out his trouble very well, yet he is scarce able to talk sense with a man; and how he will say that "Who should a man trust, if he may not trust to a brother and an uncle;" and "how much those men have to answer before God Almighty, for their playing the knave with him as they did". He told me also, that there was; £100,000 offered, and would have been taken for his restitution, had not the Parliament come in as they did again; and that he do believe that the Protector will live to give a testimony of his valour and revenge yet before he dies, and that the Protector will say so himself sometimes. Thence I went home, it being late and my wife in bed.