Well, I have thought of "Agrarianism", which would be pretty much about what it is, but that is more like it's scientific definition. Or I could even go for "Ancestral Agrarianism", which would make us brethren of Alcoholics Anonymous, which by the looks of it might be something Niselur is in a grave need of.
The difficulty here is that there are no names for the deities yet. How do you name something that is essentially a framework? Throw time into the mix?
"Chronoism?"
Something could be squeezed out of latin, but I do not know the language all that well. I suppose I should be glad I am nowhere close to actually founding it yet.