Babysitting catchup in Patagonia

In October, 2006, my sister and I joined a group of 18 people from North Wales for a 3 week visit to Patagonia in Argentina, where there is a large Welsh immigrant community. We travelled from Buenos Aires to the Andes and then across the pampas to Gaiman on the east coast. There, we attended a party where about 200 people (some tourists but mostly Patagonians) were celebrating the end of the Patagonian Eisteddfod. An elderly man came up to me and asked (in Welsh) if I was enjoying myself, and where had I come from. I answered "Penycae, a little village in North Wales." "Oh," he said, "I used to know an old lady who lived in Penycae. Her name was Catrin and she married a farmer called Goronwy". "That's my mother you're talking about!" I exclaimed. The man continued, "Catrin used to babysit me and my brothers when she lived next door to us in Denbigh." My mother left Denbigh at the age of 19, and died in 2004 at the age of 88, so he was talking about the early 1930s, 70 years ago.