Hi, I am also researching family from Grodno and the 1920 census lists a Nichol Matveyuk (at least that is how I interpreted the handwriting) living with my great-grandfather in Baltimore. I know he came to America with a group of people 1912-ish so maybe its possible our families came over together? I also believe I saw a Matveyuk buried at Holy Trinity Russian Orthodox Cemetery.

Let me know if you would like more info!