Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
Santones
←
Proto-Celtic
*swantos
(derived)
→
French
Saintes
(derived)
→
French
Saintonge
(derived)
→
French
Saint Onge
(derived)