originates from

PWGmc *arbī "inheritance" (arbī > ærβī > earβī > ierβī > ierfī > ierfi > ierfe) through pwgmc-to-oe

PGmc *arbja- "inheritance" (arbja- > arβj > arβi > ærβi > earβi > ierβi > ierβ > ierf) through pgmc-to-oe