De la Cour is a French-language surname, meaning "of the court". The alternative forms Delacour and Delacourt were used by a Huguenot refugee who settled in Portarlington, County Laois, as well as his descendants who later moved to County Cork and then to England.[1][2]
^Reaney, Percy Hide; Wilson, Richard Middlewood (1991). A Dictionary of English Surnames. Psychology Press. p. 887.
^Burke, Bernard (1894). "Delacour of Fairy Hill". A Genealogical and Heraldic History of the Landed Gentry of Great Britain & Ireland. Harrison. p. 447.