Earls of O' Reilly First holder Alexander O' Reilly, 1. count of O' Reilly Records #3 Holders Family filter On/Off 1 Alexander O' Reilly, 1. count of O' Reilly 2 Pedro Pablo O' Reilly y de las Casas, 2nd count of O' Reilly 3 Manuel O' Reilly y Calvo de la Puerta, 4th count of Buena Vista * 1797 Corrections and Updates To suggest a correction or an update. Click Here