Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
rón
→
Irish
rón
(inherited)
→
Irish
rón
(inherited)
→
Scottish Gaelic
ròn
(inherited)
→
Manx
raun
(inherited)