Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
fainey
←
Proto-Celtic
*ānniyos
(inherited)
←
Irish
fáinne
(cognate)
←
Old Irish
áinne
(inherited)
→
Manx
yl-faineydagh
(affix)