Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Breton
leau
→
English
league
(cognate)
→
Spanish
legua
(cognate)
→
Middle French
lieue
(cognate)
→
Galician
legua
(cognate)
→
Portuguese
légua
(cognate)