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.
Georgina, Lady Gormanston suggested that a maternity hospital would be a fitting was of marking Queen Victoria's Diamond Jubilee. At the time the only assistance to pregnant women came from untrained and unregulated midwives. It was agreed and a committee of women manage the Queen Victoria Maternity Hospital which opened in September 1897.[3]
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.[4]