Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Gwyn
←
Welsh
gwyn
(mention)
←
English
Wend
(doublet)
→
English
Wend
(doublet)
→
English
Gwynn
(mention)
→
English
Gwynne
(mention)