Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Douro
←
Proto-Celtic
*dubros
(mention)
←
Latin
Durius
(mention)
←
Portuguese
Douro
(borrowed)
←
Old Portuguese
Doiro
(mention)