Well nigh impossible

I thought Castor was several stars.

Far from impossible. I got all the groups and would have had all the connections if it had occurred to me that Sian could be thought of as a name.

Far from impossible. I got all the groups and would have had all the connections if it had occurred to me that Sian could be thought of as a name. However, if you include that, why not also include Siri and Pol? In that case, any one of those three could validly have gone into the names group.

Sian Phillips actress and wife of Peter O'Toole, Sian Williams BBC journalist and presenter, even Sian Lloyd former weather forecaster, Please don't upset the Welsh - Diolch yn fawr