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