Reddit reviews Pagan Portals - Rhiannon: Divine Queen of the Celtic Britons

I've been worshiping her for a bit and aside from the Mabinogion, I've found the pagan portals book about her to be very useful. There is also the Dun Brython site which has information about Rigantona though they tend to merge her with Epona, so YMMV on that one. I've offered her buttered bread, milk, strawberries and apples without a problem but of course that's just my experience. I find that she can sometimes be a bit vague and elusive but not in a standoffish way, if that makes sense. It's nice to see someone else working with her!