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Family name Úlfar (Úlfar ) , worldwide, is an extremely rare cognomen. Much more frequently, Úlfar is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Úlfar | Iceland |
Linnet, Jónsson, Hauksson, Sigmarsson, Sveinsson, Ellenarson, Hinriksson, Viðarsson, Úlfarsson, Daníelsson, Guðmundsson, Halldórsson, Herbertsson, Ragnarsson, Gunnarsson, and Þórðarson