Originally Gleadowe; he was an Irish banker, MP for County Longford, and member of the Irish Privy Council.

REFERENCES TO Sir William Gleadowe- Newcomen, first baronet:

Sydney Owenson to Robert Owenson, [1799?] in Lady Morgan’s Memoirs: Autobiography, Diaries and Correspondence. Second Edition, Revised 2 vols (London: Wm. H. Allen & Co., 1863)