Philip Sidney, 2nd Baron De L'Isle and Dudley DL (28 January 1828 – 17 February 1898) was an English Peer. Early life Sidney was born in London, England on 28 January 1828. He was the youngest child and only son born to Philip Sidney, 1st Baron De L'Isle and Dudley and the former Lady Sophia FitzClarence. His mother was an illegitimate daughter of King William IV and his mistress, the actress Dorothea Jordan. His father was the only son of Sir John Shelley-Sidney, 1st Baronet and Henrietta Hunloke and was a first cousin of poet Percy Bysshe Shelley. He was educated at Eton. Career Sidney was an Officer in the Royal Horse Guards, gaining the rank of Lieutenant. Upon his father's death in March 1851, he succeeded as the 3rd Shelley-Sidney Baronets of Penshurst Place and the 2nd Baron De L'Isle and Dudley, of Penshurst in the County of Kent. Lord De L'Isle and Dudley served as a trustee of the National Portrait Gallery. Personal life On 23 April 1850, Sidney was married to Mary Foulis (1826–1891), the only child of Sir William Foulis, 8th Baronet of Ingleby Manor, and the former Mary Jane Ross (second daughter of Gen. Sir Charles Lockhart-Ross, 7th Baronet of Carstairs and Lady Mary Rebecca FitzGerald, eldest daughter of William FitzGerald, 2nd Duke of Leinster). Upon his marriage to Mary, he assumed the additional name of Foulis after that of Sidney by Royal Warrant on 6 June 1850, under the will of his father-in-law, but relinquished it after her death in 1891. Together, they were the parents of: Philip Sidney, 3rd Baron De L'Isle and Dudley (1853–1922), who married Lady Elizabeth Maria ( Vereker) Astell, widow of William Harvey Astell and fourth daughter of Standish Vereker, 4th Viscount Gort and the former Hon. Caroline Harriet Gage (third daughter of Henry Gage, 4th Viscount Gage) in 1902. Algernon Sidney, 4th Baron De L'Isle and Dudley (1854–1945), who served in the 2nd Boer War and died unmarried. Hon. Henry Sidney (1858–1896), who died unmarried. William Sidney, 5th Baron De L'Isle and Dudley (1859–1945), who married Winifred Agneta Yorke Bevan, eldest daughter of Roland Yorke Bevan and the former Hon. Agneta Olivia Kinnaird (fourth daughter of Arthur Kinnaird, 10th Lord Kinnaird) in 1905. Hon. Mary Sophia Sidney (d. 1903), who died unmarried. Lady De L'Isle and Dudley died on 14 June 1891. He remarried on 25 January 1893