His parentage is confirmed by the charter dated 24 Jun 1147 under which "Gonnarius…Turritanorum Rex et Dominus" confirmed rights of Cassino monastery, in memory of "atavus meus Baraso Rex et Marianus avus noster, Constantinus…genitor noster, et Marchusa Regina uxor eius…". This document does not accord any title to Mariano, in contrast to Mariano´s father Barasone. It is therefore possible that Mariano predeceased his father and never ruled in Arborea.
The name of Mariano´s wife is not known.. 1