I was thinking of the Mexican state, but who knows where the truck-makers’ darts hit the map. Not sure about mountain bikes because I’m strictly a road bicyclist, myself.
We’re wandering far afield from the OP. Let’s drop this hijack.
Or Upjohn.
Are you sure this is right? You may very well be, but I have never heard Rice used as a name in Welsh.
ap Rhys > Price
ap Hugh > Pugh
ap Richard > Pritchard
Alright, alright. I get the picture! 
Yeah, that’s a good point hibernicus. I guess what I was trying to get across is that the word doesn’t literally just mean “grandson”, even though it’s commonly translated that way. It can also mean simply “descendant” - and in that case of course it would take the genitive.
It’s a holdover from Old Irish, in which singular masculine nouns in the nominative case didn’t cause lenition in nouns in the genitive case, but singular feminine nouns did.