Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
milwell
←
Proto-Brythonic
*mor
(derived)
←
Middle English
milwell
(derived)
←
Old French
moluel
(derived)
←
Old French
moruel
(mention)
←
Old French
lus
(derived)
←
Old French
luz
(mention)
←
Old French
-el
(mention)
←
Old Breton
mor
(derived)