Blaine (Blayney) to South Africa

My family traces its lineage to Castleblayney and to Gregynog.I would appreciate any help making the link from Ireland/England to South Africa.

My great grandfather was Cyril Maud(e) Benjamin Blaine of Durban, SA and his father, I believe was Benjamin.Cyril had an old copy of the Blayney family crest, but the motto on it was "Hopewell and Home Well."

Any assistance is appreciated.