Complex sentence: It is believed that he was born to a wealthy family in Sitia, in 1553, and lived there roughly up to 1590, when he then moved to Candia (present Iraklion), where his marriage to Marietta Zeno took place.
Split into simpler sentences: It is believed that he was born to a wealthy family in Sitia, in 1553, and lived there roughly up to 1590. He then moved to Candia (present Iraklion), where his marriage to Marietta Zeno took place.