Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
hwē
→
Middle Low German
we
(inherited)
→
Middle Low German
wi
(inherited)
→
German Low German
wo
(inherited)
→
Old Frisian
hwa
(cognate)