- The O'Donnell family leased the Larkfield property from the Lane-Fox estate. According to O Duigneain, Hugh O'Donnell (1691-1754) was the first O'Donnell to settle at Larkfield. The O'Donnells married into the Phibbs of Branchfield, county Sligo and the Montgomery family of Belhavel, county Leitrim. They also acquired the Greyfield estate near Keadue, county Roscommon. The estate at Larkfield was eventually purchased by the Land Commission in the 1930s.
- Robert O'Donnell was the owner of over 700 acres in county Roscommon in the 1870s. His estate was based at Greyfield, barony of Boyle where he leased a house from the O'Reilly estate. The OS Name Books indicate that O'Donnell was the agent for the O'Reilly estate in the area.