Sophia Sidney, Baroness De L'Isle and Dudley

Who was Sophia Sidney, Baroness De L'Isle and Dudley?

Sophia Sidney, Baroness De L'Isle and Dudley was the eldest daughter of William IV of the United Kingdom and his longtime mistress Dorothea Jordan.

On 13 August 1825, she married Philip Sidney, later an M.P. and the 1st Baron De L'Isle and Dudley of Penshurst in the County of Kent.

She bore four children, three daughters and a son:

Adelaide Augusta Willhelmina Sydney, married her first cousin, Frederick Charles George FitzClarence-Hunloke, son of George FitzClarence, 1st Earl of Munster, no issue

Ernestine Wellington Sidney, married Philip Perceval; mother of Major Sir Philip Hunloke, who was the father of Lt.-Col. Henry Philip Hunloke

Sophia Philippa Sidney, married Alexander, Graf von Kielmannsegg, a great-grandson of Johann Ludwig, Reichsgraf von Wallmoden-Gimborn

Philip Sidney, 2nd Baron of De L'Isle and Dudley of Penshurst, grandfather of the 1st Viscount De L'Isle

She died in childbirth in 1837, just after drawing a sketch of her ailing father. She was his favourite child and her death caused him intense grief. She was remembered as a woman of great wit, charm and gaiety.