Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
Dufenal
←
Proto-Brythonic
*Duβnowal
(derived)
←
Proto-Celtic
*Dubnowalos
(derived)
←
Old Irish
Domnall
(derived)