Andrew Gaylor was the proprietor of the Red Lion, a pub in London. After he was recruited as a Watcher, he started as an historian in 1912. In 1914 he moved into field work and was assigned the immortals:
Everett Bellian - 1914 to 1917.
Duncan MacLeod - 1917 to 1919.
Niall Ennis - 1920 to 1931.
Lydia Melchior - 1931 to 1940.
In 1936 he became the regional supervisor for London.
On the 2nd of October 1940, the London Watcher HQ was bombed during a German air raid, seven Watchers, including Gaylor, died in the ensuing fires. Gaylor was not on duty that night, but died trying to rescue his people. He had been instrumental in removing the majority of the Chronicles and artifacts housed in the London office to a secure location in Cornwall.
His name is recorded in the Hall of Martyrs.