Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cynnen
←
Latin
contendō
(borrowed)
→
Welsh
cynhennus
(affix)
→
Welsh
cynhenna
(affix)
→
Welsh
cynhennu
(affix)