originates from

PWGmc *hard(ī) 'hard' (hard(ī) > hærd(ī) > heard(ī) > hierd(ī) > hierd(i) > hierd(e)) through pwgmc-to-oe

PGmc *hardu- 'hard, severe' (hardu- > hærdu > heardu > heard) through pgmc-to-oe