John Ormsby Vandeleur (1765 – 28 November 1828)[1][2] was an Irish barrister, landowner and politician from Kilrush in County Clare.
However, their lack of compassion during the Great Famine and later record as absentee landlords left a legacy of hostility to the family, exacerbated by their widespread eviction of their tenants in the 1880s.
[3] He won the ballot to be co-opted to the Westminster Parliament for Ennis,[3] and in January 1801 he was sworn of the Privy Council of Ireland.
[3] He was probably the Major Vandeleur of the Clare Militia who was Mentioned in dispatches by Major-General Henry Johnson after the Battle of New Ross during the Irish Rebellion of 1798.
[6] In return for supporting the government in 1799 and voting for the Union,[4] Vandeleur was appointed in 1766 as a Commissioner of Revenue, a post worth £1,000 a year[3] (equivalent to £124100 in 2025[7]).