Bill Street's Children

fThis was sent to me by a friend asking for identification. "Bill Street's Children" is written on the back of the picture. The child on the right looks like my mother, Nelia Belle Street, born 5/21/1923. The baby in the middle has the look of a "Street" baby, but does not look like my mother's next younger sibling Sadie. The child on the left does not remind me of any of the family. Can anyone help me identify these children? Are these the children of William aka Will or Bill Wyatt Street and Permelia aka Amelia or Meally Vaughn Street? Is the child on the left male or female? It seems I've seen this picture, and that I was told the child on the left is a cousin, but I can't locate a copy of the picture. Can any one help?

Who are the children in this picture?
People in photo include: Louise Porch and Sadie Adell Street