Nice win!
Tyreese was swarmed by walkers and left for dead but he fought his way out, hence, lost and found. I refer to him as shepherd because when the prison was lost and everyone fled he took the time to save three little girls.
He refused to go with the Governor and his herd of cronies to attack the prison, instead choosing to stay behind to protect the vulnerable, shepherd again.
He was killed by the dead twin brother of Noah.
Thanks