Challenger of Death

A young boy who looks to be in his twenties seems to outrun Death every time he is on the verge of being killed or two seconds away from it.
Want to know his secret? Well, he's an immortal being that can't be killed. He's been alive since January 23, 1775 and lives on to today's date.
The boy has been through Hell and back to keep those he cares about alive while they still can be alive while he lives on to escape Death decade after decade.
The boy's name? Heinrich Bismarck.