Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
Catalauni
←
Gaulish
(mention)
←
Gaulish
*Katuwalos
(mention)
←
Proto-Celtic
*Katuwalos
(derived)