Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
macc
←
Gaulish
mapos
(cognate)
←
Gaulish
Maponos
(mention)
←
Proto-Celtic
*makkʷos
(inherited)
←
Proto-Celtic
*makʷos
(mention)
←
Welsh
mab
(cognate)
←
Ancient Greek
μακρός
(cognate)
←
Proto-Indo-European
*meh₂ḱ-
(inherited)
←
Latin
macer
(cognate)
←
Primitive Irish
ᚋᚐᚊᚊᚔ
(inherited)
→
English
McMahon
(derived)
→
English
Micawber
(derived)
→
Gaulish
mapos
(cognate)
→
Irish
mac
(inherited)
→
Scottish Gaelic
mac
(inherited)
→
Manx
mac
(inherited)
→
Cornish
map
(cognate)
→
Middle Irish
mac
(inherited)
→
Old Irish
Cormac
(mention)
→
Old Irish
macthae
(affix)
→
Albanian
mag
(cognate)