Ollongren family
The Ollongren family, also spelled Ållongren is a Finnish noble family.
History
The progenitor of the family, Olof, owned an estate of Pepot in Porvoon maalaiskunta. His son Nils Olofsson was a Nimismies 1480.The family was immatriculated into Swedish House of Nobility 1625 under number 115, and it got surname Ållongren i Finland from its coat of arms, displaying two oak tree branches with acorns.
The family became extinct in Finland 1806, but continued in Russia. The surname has been made known in Netherlands by astronomer Alexander Ollongren and politician Kajsa Ollongren.