Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
torad
←
Proto-Celtic
(inherited)
←
Proto-Celtic
(mention)
←
Irish
rath
(mention)
→
Irish
toradh
(inherited)
→
Scottish Gaelic
toradh
(inherited)