Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
sequer
←
Spanish
siquiera
(cognate)
←
Portuguese
se
(compound)
←
Portuguese
quer
(compound)
←
Old Portuguese
sequer
(mention)
←
Old Portuguese
siquer
(mention)
→
Spanish
siquiera
(cognate)
→
Galician
sequera
(cognate)