MERCIER, JOHN COLCLOUGH
From A Dictionary of Irish Artists 1913
Was a native of Abbeyleix or its vicinity and received his art training in the Dublin Society's School. He exhibited portraits in the Royal Hibernian Academy from 1826 to 1831. After the latter date no further mention of him has been found. At Abbeyleix, in the possession of Lord De Vesci, are portraits by Mercier of "John, 2nd Viscount De Vesci" and his wife, "Frances Viscountess De Vesci," and of "Thomas, 3rd Viscount De Vesci."