Michelle Williams has separated from her husband, musician Phil Elverum. The Hollywood Reporter said this weekend that the couple split up at the beginning of the year. People.com also reported the breakup, but said Williams, 38, and Elverum, 40, remain friends. They exchanged wedding vows in a small ceremony in the Adirondacks last July. They lived in Brooklyn with Williams' 12-year-old daughter, Matilda. The child's father was actor Heath Ledger, who died of a drug overdose in 2008.