Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
rolt
←
Middle Irish
rétlu
(inherited)
←
Old Irish
rétglu
(inherited)
→
Manx
rollage
(suffix)
→
Manx
roltag
(suffix)
→
Manx
rolteen
(suffix)