From The Grey House:
Some time ago, she found a few Slayer journals with passages about Vincent. He was almost 300 years old and, according to one female Slayer, quite the looker. He also did his best to work with humans, not use them only as food. He didn’t cause problems for humans, only Slayers.
She looked up. “What? Sorry.”
Zechariah glared at her. “Let me know if you get a job there. We’ll need to plan our next move.”