There are a number of Irish links to this family beginning with the attendance of Sir John Hobart at the Battle of the Boyne. His grandson, another Sir John, was created Earl of Buckinghamshire in 1746. The 2nd Earl of Buckinghamshire married, as his second wife, Caroline Conolly, daughter of William Conolly of Castletown House, county Kildare. In 1792 Robert, 4th Earl of Buckinghamshire married as his first wife, Margaretta, daughter and co heir of Edmund Bouke of Urrery, county Mayo and widow of Thomas Adderley of Innishannon, county Cork. Lewis refers to the Earl of Buckinghamshire as one of the principal proprietors in the Kilmallock area of county Limerick. In the 1870s the Earl owned over 2,000 acres in the county in the barony of Coshma. C.E. Vandeleur was agent to the 6th Earl in the 1870s.
National Archives, UK:
Deeds, catalogues of sale etc relating to manors, advowsons & other property of the Earl of Buckinghamshire in: Limerick: Kilmallock, Uregare, Rathmore, Rathcannon, Cloonance & in England, 1779-1813. C107/91
Public Record Office, Northern Ireland:
Typescript Papers relating to English Politicians in Ireland, include 2 letters from Pollock, Mountjoy Sq, Dublin to Buckinghamshire, re the Co Limerick estate of the Dowager Lady Buckinghamshire, 1810 & 1813. T2627/1/7/94 & /118