Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
rhoi
←
Breton
reiñ
(cognate)
←
Proto-Brythonic
*rroðọd
(inherited)
←
Proto-Brythonic
*rroðid
(inherited)
←
Proto-Celtic
*ɸrodāti
(inherited)
←
Proto-Celtic
*ɸrodīti
(inherited)
←
Welsh
rhoddi
(mention)
←
Proto-Indo-European
*deh₃-
(inherited)
←
Proto-Indo-European
*dʰeh₁-
(inherited)
←
Cornish
ry
(cognate)
←
Old Irish
do·rata
(cognate)
←
Middle Welsh
roðy
(inherited)
←
Middle Welsh
rodif
(inherited)