The Feinbergs are the family of a friend of mine. The Morris Feinberg I have information on is the son of Barnett Feinberg (b. Apr. 1862) and Bessie Mendleson. The siblings are Morris (b. 6 Dec 1888), Annie, Ruby, Dave, Lillie, and Florence.
If this is your family I would be happy to send you what information I have.