Murphy has five children with his ex-wife, Nicole Murphy: Bria: 28, Miles Mitchell: 25, Shayne Audra: 23, Zola Ivy: 18, and Bella Zahra: 16.
Murphy, 57, and Butcher, 39, began dating in 2012. Their daughter, Izzy Oona Murphy, turned two in May.
The new baby is set to arrive in December and will be welcomed by several siblings.
Murphy is also the father to 29-year-old son, Eric, whose mother is Paulette McNeely; 27-year-old Christian, whose mother is Tamara Hood; and 11-year-old Angel Iris Murphy Brown, whose mother is former Spice Girl and current “America’s Got Talent” judge Mel B.