a roe, so Irish, Early Irish erb, Old Irish heirp, *erbi-s, Greek $$Ge$$'/rifos.
II
trust (vb.), earbsa (n.), Irish earbaim, Old Irish erbaim, nomerpimm, confido, *erbiô, let, leave; Middle High German erbe, bequeath, German erbe, heir, Gothic arbja, heir: all allied to Latin orbus, English orphan.