For this Robert Gustav there are 2 different names on Yasni.
In the ranking of the most common first names Robert Gustav is on position 4589.
Male first name (German, English, French, Scandinavian): Robert; Old High (two-part name); hruod = fame; beraht = bright, shiny, old Germanic or German two-part name, common in the Middle Ages in Northern France and from there, England brought
Male first name (German): Gustav, 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