Where is Welsh?

Welsh is by Wales which is by Cymru which is by Great Britain, which has some connection with the United Kingdom.

It's nowhere near Trollia.

You have no friends, and now you know why.

Welsh is an adjective, not a noun. As in the Welsh people, the Welsh language and so on.

Welsh is NOT a nation and technically neither is Wales. Welsh is a people or language.

Wales (Welsh: Cymru is a country that is part of the United Kingdom and the island of Great Britain. ... The whole of Wales was annexed by England and incorporated within the English legal system under the Laws in Wales Acts 1535 and 1542.

See the CIA factbook for a list of all nations recognized by the U.S.

http://www.ciaworldfactbook.us/

Welsh or y Gymraeg is a member of the Brittonic branch of the Celtic languages. It is spoken natively in Wales, by some in England, and in Y Wladfa

Welsh is the official language in‎: ‎Wales.

https://en.wikipedia.org/wiki/Welsh_language

The Welsh (Welsh: Cymry) are a Celtic nation and ethnic group native to, or otherwise associated with, Wales

https://en.wikipedia.org/wiki/Welsh_people

Welsh is also the language people of Wales, the Welsh, speak.

Welsh are a People, not a place. They can be found in Wales, Australia, Canada, USA, Argentina, Scotland, and New Zealand. Your "friend' is either an idiot, or playing games with you.