Viscount Gormanston

Viscount Gormanston is a title in the Peerage of Ireland held by the head of the Preston family. It was created in 1478. The holder is the senior Viscount of Ireland, as well as the bearer of the oldest vicomital title in either Britain or Ireland. The Preston family descends from Sir Robert Preston, who served as Lord Chancellor of Ireland. Sometime between 1365 and 1370 he was created Baron Gormanston in the Peerage of Ireland by writ. His great-grandson, the fourth Baron, served as Lord Deputy of Ireland. In 1478 he was created Viscount Gormanston in the Peerage of Ireland. His great-great-great-great-grandson, the seventh Viscount, was a supporter of King James II and was outlawed after the Glorious Revolution.

In 1800 Jenico Preston had the outlawry reversed and was summoned to the Irish House of Lords as the twelfth Viscount Gormanston. He was the great-grandson of Anthony Preston, the de jure ninth Viscount Gormanston, the nephew of the seventh Viscount. The twelfth Viscount was succeeded by his son, the thirteenth Viscount. In 1868 he was created Baron Gormanston, in the County of Meath, in the Peerage of the United Kingdom, which gave the Viscounts an automatic seat in the House of Lords. His son, the fourteenth Viscount, notably served as Governor of British Guiana and as Governor of Tasmania. As of 2010 the titles are held by the latter's great-grandson, Jenico Preston, 17th Viscount Gormanston who succeeded to the titles in 1940 at the age of seven months after his father was killed during the Battle of France in the Second World War. Known as Nicholas Gormanston, he is married to Lucy Fox, his second wife.

Another member of the Preston family was Thomas Preston, 1st Viscount Tara. He was the second son of the fourth Viscount Gormanston. Also, John Preston, 1st Baron Tara, was a descendant of a younger brother of the first Viscount Tara.