This family is associated with that of Dillon's Grove, county Roscommon. The Quarterstown estate was owned by them until the 1790s when Harriett, daughter and heiress of Arthur Dillon, married Henry Croker.
- Pedigree of Dillon of Dillon's Grove, Co. Roscommon, of Drumranny, Co. Westmeath, of Quarterstown, and Ballydaniel, Co. Cork, and of Dublin, 1180 -- 1800. Genealogical Office: Ms.172, pp.52-4 ; National Library of Ireland
- Copy of confirmation of arms to the descendants of Major Henry Croker and Harriet, his wife, daughter of Arthur Dillon of Quarterstown, Co. Cork, which Henry was the fifth son of John Croker of Ballynagarde in Co. Limerick, and to the grandson of the said Henry, being Richard Welsted Croker of Glencairn, Co. Dublin, second surviving son of Eyre Coote Croker by Frances Welsted, Feb. 20, 1905. Genealogical Office: Ms.111, pp.161-2 ; National Library of Ireland