Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Dugan
←
Irish
Ó Dubhagáin
(derived)
←
Irish
dubh
(mention)
→
English
Duggan
(mention)
→
English
Dougan
(mention)