Anglo-Welsh
/ˌaŋɡləʊ ˈwɛlʃ/noun
Treated as plural. With the. English-speaking Welsh people, considered collectively.
adjective
1Of, relating to, or involving both the English and the Welsh.
2Of or belonging to the English language as used by Welsh speakers or writers.
Origin
Early 19th century; earliest use found in The Gentleman's Magazine. As noun from Anglo- + Welsh. As adjective from Anglo- + Welsh.