Placid British surnames are fairly common over the southern part of south America tbh, see the lad McAllister at Brighton. When I first went I started to make a point to visit graveyards every place I visited, Juan Miguel Brown and the like plus plenty of Yugoslavish surnames in the south of Chile if I remember right.
Visited Puerto Madryn, where the Welsh settlers came ashore, on my way down south (this is going back 30 years) and there was the odd Calle Jones and such dotted about, but the proper tea shops, with lace doilies, fine china and an Argentinian approximation of barra brith (?) are in the inland settlements. The whole Welsh in Patagonia has become a bit of a thing in recent years, even Howies did a photoshoot there, to buff up their none-more-Welsh credentials.
I remember speaking to a bloke there who worked in the shipyards at Barrow in the 70’s, loved his fortnightly trips to Anfield, reminiscing about John Toshack and the rest. He might have worked on some of the ships used in the Falklands, thinking about it.
If (when) I go back I fancy the Andean side of Patagonia - Neuquen, Esquel and that.
Argentina’s acemans.