Patrick Reilly held 3 townlands in the parish of Boyounagh, barony of Ballymoe, county Galway, in the mid 1850s and Patrick and Michael Reilly both had houses in the town of Glennamaddy. Michael Reilly of Glennamaddy owned 3,631 acres in county Galway in the 1870s. His estate amounting to 3,726 acres was offered for sale in December 1880 by the trustees of his will. The estate was dispersed throughout the parishes of Boyounagh, barony of Ballymoe and Kilkerrin, barony of Tiaquin. Pádraig Lane writes that Michael Reilly of Glan bought some of the property of Bartholomew Kelly in 1856. It is also evident that he bought land formerly in the possession of William Ball, Sir St George Gore and Robert E. Bredin.
Galway County Library:
Landed Estates Court Rental, Reilly, Neary & Sheridan, 14 Dec 1880, baronies of Ballymoe & Tiaquin. M62,660
National Archives of Ireland:
Landed Estates' Court Rentals (O'Brien), Reilly, 14 Dec 1880 & 14 Nov 1882, Vols 140 & 144, MRGS 39/062 & 39/064, (microfilm copy in NUIG)