Robert "Bob" Hitchens was the husband of Iola Black and a muggle in the 1870s.
He was a florist in London Iola fell in love with. Naturally, with Robert being a muggle, the family disapproved and disowned Iola. Only her mother, Ella Max, would come visit from time to time and meet Robert.
Iola was killed in a car accident in 1911, leaving Robert heartbroken and grieving.