Letter 145 to Leo Augustus
1 (Asking him to help the church of Alexandria in appointing a good bishop in place of the murdered Proterius2 .)1 Marcian died in 457, and was succeeded by Leo of Thrace.
2 On Marcian's death there had been a rising, in which Proterius had been brutally murdered, and a monk named Timothy Aelurus set up in his stead.