Green’s Dictionary of Slang

1. (Aus.) a chic, sophisticated, ‘trendy’ Australian [a stereotypically ‘smart’ name].

1960		Encounter (London) May 29: A Roy [...] would patronise Art Nouveau every pay-day . . . for arty knick-knacks for his lovely Wahroongah home [AND].
1971		C. McGregor Don’t Talk to Me About Love 130: It’s like those signs hung out by London landladies: Sorry, no Roys [AND].

2. (US black) a stupid white boy [a stereotypically ‘white’ name].

2000

Ebonics Primer at www.dolemite.com 🌐 roy Definition: a stupid white boy Example: I’ll git ya fiddy bones to booger punch tha roy.