Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Welsh
rwyt
←
Proto-Brythonic
*rruɨd
(inherited)
←
Latin
rēte
(derived)
→
Welsh
rhwyd
(inherited)