The Scotish surname McBETH is a personal name which has been used as a surname. The name was common in Scotland between the 11th and 14th centuries. The personal name is derived from the Gaelic "Macc bethad" and literally signifies "son of life". The most notable bearer of the name was MacBeth (1005 - 1057) who was King of Scotland from 1040. He was commander for Duncan I, whom he defeated and slew, thereby becoming king. He was later defeated by Malcom, the son of Duncan. MacBeth was originally from Moray and records show that he used his power for the good of his country. He was a protector of the monks and the first Scotish king whose name appears in ecclestical records as a benefator of the Church. MacBeth's life was used as the basis of one of William Shakespeare's greatest dramas and he is generally remembered as a weak and irresolute man, although historical records disagree with this view.
Blazon of Arms: Gules, a dexter hand issuing from the base, holding on the point of a sword in pale proper, a dragon reguardant or, all within a bordure of the last. Translation: A dragon was believed to possess a keen sense of sight and represents the most Valiant Deffender of Treasure.
Crest: A serpent's head couped proper.
Motto: Conjuncta virtuti fortuna. Translation: Fortune joined to bravery
I copied the above from a web site. It is accurate appart for the Shakespere connection. Ths McBeth Family name has nothin to do with the character in the play.