At the time of Griffith's Valuation, Francis Olpherts was leasing Mount Shannon, barony of Carbury from John Wynne. The house was then valued at £35. McTernan states that Olpherts had recently been appointed agent to the Wynne estate and later married Marianna Wynne of Ardaghowen. The house is still recorded by Slater as being in his possession in 1894. It has had a number of owners since the early twentieth century but is still extant and occupied.