Knockadoo was the home of the Knott family in the mid 18th century. Robert Knott was resident there in 1749. Robert Elwood was leasing a house at Knockadoo from Viscount Lorton at the time of Griffith's Valuation. it was valued at £24. In the 1870s it is recorded as the address of Joseph Bennett Little. Earlier, at the time of the first Ordnance Survey it is described as "a fine mansion resided in by Owen Lloyd". A farm is still extant at the site.