You never know. My dad’s best friend in college, also in ESL classes had an Irish sounding name, was 3/4 Cherokee and looked it, only spoke French and had a passport from Congo.
Which reminds me of the old joke:
A Chinese man with the name Sean O’Grady was asked how he acquired such a moniker.
He said that the guy in front of him at Ellis Island was named Sean O’Grady.
When his turn came, he said his name was Sam Ting...