For this Rui Gustavo there are 2 different names on Yasni.
In the ranking of the most common first names Rui Gustavo is on position 4589.
Male first name (Portuguese): Rui, Old High (two-part name); hruod = fame; rihhi = rich, powerful, power, rule, ruler, old Germanic or German two-part name, known by the last king of the Visigoths, Roderick, who died 711 in battle against the Arabs
Male first name (Italian, Spanish): Gustavo, Old Norse (two-part name); gautar = the Gaute, the Goth; stafr = the rod; acquired from Swedish into German name, origin not known certainly, the identity of 6 kings in Sweden