William John Gray, 13th Lord Gray (1754–1807), was a Scottish

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

 nobleman and soldier.

He was the son of John Gray, 11th Lord Gray, and Margaret Blair. He served as a cornet

Cornet

The cornet is a brass instrument very similar to the trumpet, distinguished by its conical bore, compact shape, and mellower tone quality. The most common cornet is a transposing instrument in B. It is not related to the renaissance and early baroque cornett or cornetto.-History:The cornet was...

 in the 2nd Dragoons (Royal Scots Greys), and was made lieutenant in 1776. He was promoted to captain in the 15th Dragoon

15th The King's Hussars

The 15th The King's Hussars was a cavalry regiment in the British Army. First raised in 1759, it saw service over two centuries, before being amalgamated into the 15th/19th Hussars in 1922.-Formation:...

s in 1779, and retired in 1788.

He succeeded his brother as Lord Gray

Lord Gray

Lord Gray is a title in the Peerage of Scotland. It was created in 1445 for the Scottish diplomat and politician Sir Andrew Gray. His great-great-great-great-great-grandson, the seventh Lord, was granted a new patent with remainder to William Gray, husband of his only daughter Anne, and his heirs...

 in 1786. On 12 December 1807 he committed suicide

Suicide

Suicide is the act of intentionally causing one's own death. Suicide is often committed out of despair or attributed to some underlying mental disorder, such as depression, bipolar disorder, schizophrenia, alcoholism, or drug abuse...

 at his home, Kinfauns Castle

Kinfauns Castle

Kinfauns Castle was designed by Robert Smirke and built between 1822 and 1826 by Lord Gray on the site of a medieval stronghold. It is situated in Perth and Kinross, Scotland, and is currently occupied by Scottish businesswoman Ann Gloag. The house is protected as a category A listed building, and...

 in Perthshire

Perthshire

Perthshire, officially the County of Perth , is a registration county in central Scotland. It extends from Strathmore in the east, to the Pass of Drumochter in the north, Rannoch Moor and Ben Lui in the west, and Aberfoyle in the south...

. His suicide is attributed to a love disappointment. He was unmarried, and was succeeded by his brother.