Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
gwaun
←
Proto-Celtic
*wāgno-
(inherited)
←
Proto-Indo-European
*wāg-
(inherited)
←
Latin
vagus
(cognate)
←
Old Welsh
guoun
(inherited)
←
Middle Welsh
gwawn
(inherited)
→
English
Hirwaun
(mention)