Trinity Monroe was born to Steve and Marie Monroe in 1963 in Santa Barbara, California. She grew up with a normal, happy childhood and did her undergrad at USC and her graduate work at UCLA. She worked as a researcher and archivist at various museums, while having a second job as a part-time trainer in various types of martial arts, which she had been training in since she was in pre-school.
Her parents died at different times while she was in her twenties, so she was alone for some time, having been an only child. Then Thomas Anderson walked into her life. She agreed to date him and a couple of months after they started dating, he revealed that he was a Vampire and that she was his Mate. She agreed to be Turned and Bonded to him shortly thereafter.