Can you help please? Trying to trace my Grandfather, Ola Coker

I have a post (as titled above) on the fabulous Nairaland, Family section. As I'm wishing to abide by the rules and not post twice, please refer.
My post also has a slight element of a religious question, that someone, who frequents this section, may know the answer to,


I’ve also heard that the Coker family name, worshiped at the ‘Christ Church Cathedral’, Marina, Lagos(Anglican) Does anyone know how true this is?

In isolation this sounds like a silly question, please read my full post, in 'Family' if you can.

Thank you
Julesb