Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
draw
←
Breton
treu
(cognate)
←
Old Breton
dydreu
(cognate)
←
Old Breton
didreu
(mention)
→
Welsh
traw
(mention)
→
Welsh
traw
(mention)