Alexandrus' life has been difficult. Probably to be expected when you've been a vampire for 400 years.
Struggling with his memory, he finds solace in alchemy and herbalism. Following war, battle, and bloodshed, he continues practicing his craft as a combat medic (and feeds when he is least likely to be noticed).
Making his way to the American Colonies with the whispers of revolution on the air, he expects to continue as normal.