Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
untat
←
Old English
oþþæt
(cognate)
←
Old High German
untaz
(cognate)
←
Old Saxon
und
(affix)
←
Old Saxon
that
(affix)
→
Old English
oþþæt
(cognate)