Broke was the eldest son of Robert Broke of Nacton and his wife Elizabeth Hewitt, daughter of John Hewitt, of Waresley, Huntingdonshire.
[2] Broke was returned as a Tory Member of Parliament for Ipswich after a contest at a by-election on 27 January 1730.
He spoke against the Hessians on 4 February 1730, and voted consistently against the Government.
He married as his second wife Alice Lady Barker, widow of Sir John Barker, 6th Baronet, of Sproughton, Suffolk, daughter of Sir Comport Fytche, 2nd Baronet of Eltham, Kent.
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