Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
œrr
→
Old English
werig
(cognate)
→
Danish
ør
(derived)
→
Icelandic
ær
(inherited)
→
Norwegian Nynorsk
ør
(inherited)