Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
ymherodr
←
Proto-Brythonic
*ɨmperọdr
(inherited)
←
Latin
imperātor
(derived)
→
Welsh
ymerodraeth
(affix)