Celia Ann "Mattie" Blaylock (January 1850 – July 3, 1888) was a prostitute who became the romantic companion and common-law wife of Old West lawman and gambler Wyatt Earp for about six years.

Henry and his wife were stern parents and adhered to the principle, "spare the rod and spoil the child," and "children should be seen and not heard."

Celia, or "Celie" as she was known as a child, attended Sunday school, learned Biblical parables, and was taught to live by the Ten Commandments.

[1] At some point after leaving home, Celia chose the alias "Mattie", probably in an effort to conceal her identity and remain as anonymous as possible.

[4] In the 1880 United States Census of Tombstone, Blaylock is listed as Wyatt's wife though there is no record of a legal marriage.

[5]: 47 [5]: 65 Blaylock suffered from severe headaches and while in Tombstone, Arizona she became addicted to laudanum, a then-common opiate and pain killer.

Tombstone diarist George W. Parsons never mentioned seeing Earp and his next common-law wife, Josephine "Sadie" Marcus, together and neither did John Clum in his memoirs.

They hunted down some of the outlaw Cochise County Cowboys they believed responsible for maiming Virgil Earp and killing Morgan.

Blaylock left Colton and returned to Pinal City, but the silver boom had died out and the bulk of the town's population had moved on.

Blaylock planned to return to sex work in Pinal City, but with most of the prospective clientele gone with the silver, making a living there proved difficult.