Mae wefan Ysgol Gyfun Gwynllyw allan o defnydd am adeg, os oes angen unrhywbeth, cysylltwch gyda'r swddfa / Ysgol Gyfun Gwynllyw's website is currently under maintenance, if you require any information, please contact the school office
Ebost/Email
Ebost y Pennaeth/Head Teacher's e-mail:
EB@gwynllyw.schoolsedu.org.uk
Ysgol Gyfun Gwynllyw Heol Folly, Trefddyn, Pontypwl, NP4 8JD.
