The 39-year-old British actor and wife Sophie Hunter welcomed their son in June, following the couple's February wedding in their native England, reported People magazine.
"I've become a father and a husband, and in the right order - just. I might go for a (Cumber) batch of boys!.
"It's everything. I have a new life form that needs his father's help in the world and his mother needs a little help once in a while," the "Sherlock" star said.