For this Ulf Gregor there are 2 different names on Yasni.
In the ranking of the most common first names Ulf Gregor is on position 4589.
Male first name (German, Scandinavian): Ulf, the wolf, Old Norse (became independent short form); ulv = the wolf, originally short form of names with 'Ulf-' or '-ulf', eg 'Thorulf'
Male first name (German, Scottish): Gregory, the Vigilant, Ancient Greek (Roman epithet); gregoros = alert; late Roman nickname of Greek origin, popular among the early Christians interpreted as 'alert the returning Christ expecting'; in the Middle Ages popular papal name; so far contributed 16 popes named Gregory and Gregory