Appointed KCMG in 1887, he was promoted GCMG in 1897.
Lord Gormanston married firstly the Hon. Ismay Louisa Ursula Bellew, daughter of Patrick, 1st Baron Bellew, in 1861; they had no children. After his first wife's death in 1875, he married secondly Georgina Jane Connellan, daughter of Major Peter Connellan, in 1878; they had three sons and one daughter.
Lord Gormanston died at Dublin in October 1907, aged 70, and was succeeded in his titles by his eldest son Jenico Edward Joseph Preston, 15th Viscount Gormanston.[2]
He held almost 11,000 acres in Meath and Dublin.[3]