I do know that it will take a grand amount of research and effort on my part, but I thought I'd tap into the well here for some insight. Basically, the original language of the humanoid race in a fantasy product of mine is based on Latin (in the most recent form before it became a dead language; it was 'seeded' to them by the deity that created them). How would such a language naturally evolve due to certain constraints, such as the evolving religious mythology (wherein the triune 'godhead', as it were, is a mother, father, and child)? Or interactions with the languages of other species (the bellows and grunts of the orc archetype's symbolic language, or the sea-dwelling race's musical language, or the impressions by which various spirits communicate with the living). Ideas and guidance on how to study the evolution and creation of a language is what I'm looking for.