Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
aineolas
←
Irish
an-
(affix)
←
Irish
eolas
(affix)
←
Old Irish
aineólas
(inherited)
←
Old Irish
eólas
(mention)