In the 1870s Cyril Allies bought the Inishbofin estate of Henry William Wilberforce in the barony of Ballynahinch, county Galway, which he held on mortgage from Wilberforce since 1859. By about 1910 negotiations were well advanced for the purchase of the Allies estate by the Congested Districts' Board.
- Solicitors' records from office of S. and R.C. Walker, includes deeds re Wilberforce and the island of Inishbofin. Small Accessions Index, No. 30; National Archives of Ireland