St. Linus
Linus · ~64 – ~76
Succeeded St. Peter as Bishop of Rome and kept the young Church intact during Nero's persecution.
Linus took charge of the Christian community in Rome at a moment when its founder had just been executed. Paul mentions him in the Second Letter to Timothy, which places him in the inner circle of the apostolic generation. Details are scarce, but the early Church remembered him as the man who held things together when being a Christian in Rome could get you killed. He is traditionally credited with requiring women to cover their heads during worship. He likely died a martyr, though the circumstances are lost to history.
The Quiet Successor
Linus had the unenviable job of following Peter. He inherited a frightened, persecuted community and kept it alive. No speeches survive, no grand theological works. Just the fact that the Church in Rome continued. Sometimes the most important thing a leader does is simply not let the thing fall apart.