Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
elain
←
Proto-Brythonic
(inherited)
←
Proto-Celtic
*elanī
(inherited)
←
Proto-Indo-European
*h₁el-en-i-
(inherited)
←
Proto-Indo-European
*h₁él-h₁n-ih₂
(mention)
←
Proto-Indo-European
*h₁el-
(mention)
←
Old Welsh
(inherited)
←
Middle Welsh
elain
(inherited)
←
Middle Welsh
elein
(mention)
→
Czech
jelen
(cognate)
→
Welsh
Elain
(mention)