Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cwta
←
Middle English
kut
(borrowed)
←
Middle English
kutte
(mention)
←
Cornish
kot
(cognate)
→
Welsh
buwch goch gota
(affix)