Sorry BN, that was a cut and waste excercise!
What I meant to do:
"If we now say that Ogham/Ogma may be a derivative based on the similar name we must also think that this derivative may not reflect the "heart" of Ogmios but may just encompass some peripheral similarities."
That depends on whether one considers the 'heart' of a god of language to be 'language', or to be a cultural interpretation of language. This is confusing as hell to me. As for the similarities in representation, all i can say is "I've been done guv",
bah to books. Thanks old chap for the clearing up.