William “Billy” Marshall (reputedly born in Ayrshire around 1672 and lasting until 1792) was of gypsy (tinker) stock, who became famous as a boxer- -and a bandit. He became “king” of the tinkers in Galloway and proceeded to terrorize much of the countryside. His legendary exploits also include deserting from the army no less than seven times and from the navy three times. He is reputed to have married on 17 occasions, had countless children (both in and out of wedlock) and fathered at least four children after the age of 100. His gravestone stands in the cemetery of St Cuthbert’s in Kircudbright.

William Marshall, who was born in Fochabers (now in Morayshire) in 1748, was a real “Jock of All Trades”. He was a butler to the Duke of Gordon for more than forty years but was also estate factor, surveyor, architect, justice of the peace – and a clock maker and astronomer. In addition to all that, he was a famous fiddler and composer for that instrument. He introduced a number of innovations in fiddle music. His best known composition is a setting of the Robert Burns piece “Of a’ the airts the wind can blaw”.

Keith is regarded as a sept (sub-branch) of the Marshall clan.

From “Clan/Family Histories—Marshall” Online Source 02-12-2014 via Google Search

Spelling translated to American from the English by John Rubens