Complex sentence: He also wrote an autobiography, the date of which is uncertain but which mentions a time when he wanted to retire, in 4 BC, when he was in fact persuaded to travel with Herod Archelaus to Rome.
Split into simpler sentences: He also wrote an autobiography, the date of which is uncertain. It mentions that he wanted to retire, in 4 BC, but was persuaded to travel with Herod Archelaus to Rome.