Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
erchi
←
Proto-Indo-European
*preḱ-
(mention)
←
Middle Welsh
erchi
(inherited)
→
Welsh
arch
(mention)
→
Welsh
arch
(mention)
→
Welsh
annerch
(affix)