We only have a date of birth for Axantur, but the Men of his generation of the House of Elros could expect to live for about four centuries. He therefore probably lived on into the reign of King Tar-Meneldur, surviving until (very approximately) the year II 795.

Axantur's name is not specifically explained, but it seems to combine axan ('law' or 'rule') with tur ('lord'). Lacking biographical details of Axantur's life, it's hard to definitively interpret this combination of elements, but they seem to hint that he was an important judge, or held some kind of analogous role.