For this Duncan Roderick there are 2 different names on Yasni.
In the ranking of the most common first names Duncan Roderick is on position 4589.
Male first name (English): Duncan, brown (haired) warrior; Old Irish (Word format); donn = brown; chadh = the warriors
Male first name (English): Roderick, 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