Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
Morgan
←
Welsh
môr
(cognate)
←
Welsh
mawr
(cognate)
←
Welsh
cant
(cognate)
←
Old Welsh
Morcant
(inherited)
←
Old Welsh
mor
(mention)
←
Old Welsh
maur
(mention)
←
Old Welsh
cant
(mention)
→
English
Glamorgan
(link)