Where does “amaethyddiaeth” come from?
amaethyddiaeth (Welsh) comes from Welsh amaethydd, from Welsh amaethu, from Welsh amaeth, from Middle Welsh amaeth, from Proto-Brythonic *ammaɨθ, from Proto-Celtic ambaxtos, from Proto-Indo-European h₂eǵ- — to drive.
amaethyddiaeth (Welsh): agriculture
Ancestry of “amaethyddiaeth”, step by step