Thank you - I'm still catching up! This is the first search I've done on this and I'm amazed by the results.
Names are going on an aunt's memory...
My great grandfather was Edward William Hughes (Ted) unsure of birth date, of Cymyran. He married Lucy Rose Evans, possibly Australian, and my grandmother is Olwen Mary Hughes (who became Olwen Watt).
I've found an ambiguous newspaper article from Western Australia, 1921, that says he was part of the lifeboat crew in that era but not specifically during the Rhoscolyn event. This was reported as at the time Ted was Second mate of the Federal Lighthouse Service S.S. Governor Musgrave, stationed at Perth (and reportedly performed some amazing acts during the war... but that's another quite amazing story).
The history of my great grandmother's family is well remembered by my family for various reasons but I'm very interested in the Welsh connection.
I've visited Rhoscolyn bay, actually on a whim while visiting Rhosneigr for other reasons. I saw the name on the map and it was familiar. It wasn't until after I'd walked around the bay, puzzled at why I was intrigued by it and left the area that I received an email from my mother, Myfanwy, explaining the family connection. I must have heard the name while my gran was still alive and filed it away somewhere!
