John FitzPatrick, 1st Baron Castletown

John Wilson FitzPatrick, 1st Baron Castletown PC (born John Wilson; 24 September 1809 – 22 January 1883) was an Anglo-Irish Liberal politician.

Early life and education Castletown, baptised John Wilson, was born in London, the illegitimate son of John FitzPatrick, 2nd Earl of Upper Ossory and Elizabeth Wilson. He had a brother, Richard, who died young, and an elder sister, Emma Mary (died 25 September 1882), who married Robert Vernon Smith (later Lord Lyveden). After their father's death in 1818, they were raised at Ampthill Park under the guardianship of their cousin Henry Vassall-Fox, 3rd Baron Holland (1773–1840), who inherited Ampthill from the earl.

He was educated at Eton.

He inherited parts of his father's estates in Ireland in 1823, when he reached the age of majority.

Family

Lord Castletown married Augusta Mary Douglas, daughter of Reverend Archibald Douglas, in 1830. They had one son and six daughters.