Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
Saxain
←
Latin
Saxō
(derived)
←
Old Irish
Saxain
(inherited)
→
Irish
Sacsain
(inherited)
→
Middle Irish
Saxanach
(affix)
→
Middle Irish
Saxanach
(affix)