Ogham : diforc'h etre ar stummoù

===Emdroadur===

<!-- Troet : Use of "classical" Ogham in stone seems to have flowered in the [[5th century|5th]]&ndash;[[6th century|6th centuries]] around the [[Irish Sea]]. The language of the Inscriptions from this period is termed [[Primitive Irish]]. The transition to [[Old Irish]], the language of the earliest sources in the Latin alphabet, takes place in about the 6th century. Since Ogham inscriptions consist almost exclusively of personal names, linguistic information that may be glimpsed from the Primitive Irish period is mostly restricted to [[phonology|phonological]] developments. -->

<!-- From phonological evidence, it is clear that the alphabet predates the 5th century. A period of writing on wood or other perishable material prior to the preserved monumental inscriptions needs to be assumed, sufficient for the loss of the phonemes represented by ''úath'' ("H") and ''straif'' ("Z"), which are clearly part of the system, but unattested in inscriptions. This evidence points to a creation not post-dating the [[4th century]]. A possible origin, as suggested by McManus (1991:41), is the early Christian community known to have existed in Ireland in from around AD [[400]] at the latest, the existence of which is attested by the mission of [[Palladius]] by [[Pope Celestine I]] in AD [[431]]. Another possiblility would be 4th century Irish colonies in [[History of Wales|Wales]] who came into contact with the Latin alphabet.