cophad
cor
coral
corans
corddalfent
coreistr
corff
corfforal
cornpib
correg
corregestrediwn
correith
correithfent
correithiwn
corridwr
corruth
corrwyth
corw
corwn
corwnar
corwngirch
coryll
coscient
cosedyf
cosegrar
cosin
cosolar
cosoliddar
costantfent
costar
costidydiwn
costrwyr
coswl
coth
cothar
cre+ddeint
cre+ddir
credidwr
Crefedd
crefeddig
crefer
creg
crest
creth
criadwr
criadyr
criar
cricket
cricketeir
crid
Brithenig