Civil Parish: Ballindoon
Church Parish: Clifden
District Electoral Division: Errislannan
Area: 9 acres, 0 roods, 20 perches
1911 Census for Ardillaun (no records)
1901 Census for Ardillaun (no records)
Old Pensions Census (1841 – 1851) (no records)
1670 Down Survey for Ardillaun (no records)
NUI Galway Digital Collections for Ardillaun (no records)
Plot 1: John King leased 8 acres, 2 roods and 20 perches of land from the Directors of the Law Life Assurance Co.
There were also 2 islands belonging to the Directors of the Law, Life Assurance Co. that had an area of 16 perches but had no agricultural value.