Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Welsh
haearn
←
Proto-Brythonic
*hiyarno-
(inherited)
←
Proto-Celtic
*īsarnom
(inherited)
←
Proto-Indo-European
*h₁ésh₂r̥
(inherited)
→
Welsh
haearn
(inherited)