Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Norse
ᚨᚾ
←
Proto-Germanic
*ana
(inherited)
←
Proto-Indo-European
*h₂en-
(inherited)
→
Icelandic
á
(inherited)
→
Old Norse
á
(inherited)