Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
ther-to
←
Old English
þǣr-tō
(derived)
←
Middle English
ther
(cognate)
←
Middle English
to
(mention)
←
Middle English
to
(mention)