He's a vampire married to a vampire. Vampires are immortal unless killed with a wooden stake.
It's the Victorian era/1839 so not much technology. 
Vampires can not drink each other's blood! Vampires CAN'T Be in the sun
He has brown hair and red eyes 
he can hypnotize people, run fast, become a bat, and fly
has social anxiety, seem's rude, Blunt comments, side eyes, sharp tongue. kind, loving, cold, caring, funny, strong, Introverted, Sensing, Thinking, Judging, ruthless, 6ft 
wears a mask
