Robert Shortall appears to have been a member of the Shortall family who were lords of Ballylarkin in County Kilkenny.
Angela Mungham, "English settlers in fourteenth century Ireland. A case study of twelve landed families of South Leinster/East Munster," MA thesis, University of Durham (2006).
Margaret Phelan, "Ballylarkin and the Shortall Family," Old Kilkenny Review (): 5-8.
Eric St. John Brooks, Knights' Fees in Counties Wexford, Carlow, and Kilkenny (Dublin: Stationery Office, 1950): 187, 267n, 273.
Margaret K. Smith