Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
pearsa
←
Latin
persōna
(derived)
←
Middle Irish
persa
(inherited)
←
Old Irish
persan
(inherited)
→
Irish
pearsanta
(mention)