sentences:  The Irish lands were the ancestral lands owned by the family since Theobald Dillon, 1st Viscount Dillon in the 17th century.They lay in north-eastern Connacht (Counties Mayo and Roscommon) and in western Leinster (Westmeath).The land in England was in Oxfordshire and had been acquired more recently by the marriage of the 11th Viscount to Charlotte Lee, daughter of the 2nd Earl of Lichfield in 1744 and the inheritance that followed in 1776 at the death of the 4th Earl of Lichfield.