was the first Irish Draught Stallion to be performance tested in Ireland. Flagmount Boy was a very good jumper ridden by John Hall
A full brother to Flagmount Diamond, the stallion Flagmount King, was a Grade A international jumper and is claimed to be the only Irish Draught stallion to win timed events in open competition. He competed as a member of the British Team. Also a full brother to Flagmount Diamond and Flagmount King is the stallion and sire Flagmount Boy. All three brothers have achieved an above-average Genetic Index, Flagmount Diamond with 126 and a 91% accuracy stands 14th in Ireland, Flagmount Boy with 120, and 72% accuracy stands 17th and Flagmount King has an index of 121 with a 64% accuracy.