My great Grandpa was in the battle of Verdun in WW1, and was pretty much the only surviving member of his unit, but that's about it.
Basically, he was told to go leave the bunker/trench to go and deliver a message. He wasn't happy having to leave the safety of the bunker, but he did it. A few seconds after he hopped out to go deliver the message...BOOM. Grenade in the bunker, killing everyone. Thus, delivering that message saved his ass.
...And that's probably where I get my inordinately high luck from.
But that's as close as I come to being related to anyone famous.