William Brooke (MP, died 1643)

He was the only son of George Brooke and Elizabeth Burgh, and in 1619 would have succeeded his uncle Henry Brooke, 11th Baron Cobham as Baron Cobham, if the barony had not been under attainder,[1] because of his father and uncle's treason, both having participated in the Main Plot of 1603 against King James I of England.

[2] Brooke married twice; his first wife was Pembroke Lennard (daughter of Henry Lennard, 12th Baron Dacre and Chrysogona Baker, daughter of Sir Richard Baker),[3] and his second wife was Penelope Hill, daughter of Sir Moyses Hill of Hillsborough, County Down, and his first wife Alice McDonnell and widow of Arthur Wilmot.

Margaret, Lady Denham (1642–1667), his fourth daughter, was a celebrated beauty who was painted by Peter Lely and was the mistress of the future King James II.

Her husband, the poet Sir John Denham, is said to have murdered her in revenge for her infidelity, although in fact, her death was probably natural.

[2] During the English Civil War he was Colonel of the Sutton-at-Hone Lathe Volunteers of the Kent Trained Bands, and died from wounds received at the First Battle of Newbury.