BRIAN MCKNIGHT You Are The Father (Maury Voice)

Brian McKnight is paying child support on a 1-year-old boy bearing his name -- and his baby mama is using Kevin Federline's attorney to get her money

McKnight was in court last week for a child support hearing over little Evan Brian McKnight. The mother, Miriam Moreno, hired Mark Vincent Kaplan — who repped K-Fed in his divorce from Britney Spears.

We don’t know if there has been an official paternity test — but seeing as the kid has the last name McKnight, and McKinight is paying up child support … well, you figure it out.

A rep for McKnight had no comment.