Windham Henry Quin, 2nd Earl of Dunraven and Mount-Earl (4 September 1782 – 6 August 1850) was an Irish Peer.
He was the eldest son of Valentine Richard Quin, 1st Earl of Dunraven and Mount-Earl and Lady Frances Muriel Fox-Strangways, daughter of Stephen Fox-Strangways, 1st Earl of Ilchester, and his wife, the former Elizabeth Horner. He had one brother, Richard George Quin (1789–1843), who married Amelia Smith on 7 September 1813 and died without issue, and two sisters, Elizabeth who died young in August 1795, and Harriet, who married Sir William Payne-Gallwey, 1st Baronet and died in 1845.
He was styled Viscount Adare from 1822 until he succeeded to the Earldom on the death of his father in 1824. He took the additional surname of Wyndham, becoming Windham Wyndham Quin, on 7 April 1815.
He was appointed Custos Rotulorum of County Limerick for life in 1818. He served as an MP for County Limerick in the Parliament of the United Kingdom from 1806 to 1820. He was accused of corruption following the 1818 General Election, but after a full inquiry, the House of Commons exonerated him.[1]
On 27 December 1810, he married Caroline, daughter and heiress of Thomas Wyndham of Dunraven Castle, Glamorgan and Clearwell, Gloucestershire. They had the following children: