Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*linnā
→
Breton
lenn
(inherited)
→
Welsh
llen
(inherited)
→
Irish
leann
(inherited)
→
Latin
linum
(mention)