Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
deartháir
←
Proto-Celtic
*brātīr
(derived)
←
Proto-Indo-European
*bʰréh₂tēr
(derived)
←
Old Irish
derbráthair
(inherited)
←
Old Irish
derb
(mention)
←
Old Irish
bráthair
(mention)
→
Manx
jarroo-vraar
(cognate)