OK, this is a tough one. No relatives at all. The picture was taken in the home of Albin Leo Dittli, about 1977.
This is the home Albin was living in when he and Ada met. It is the only picture I have found of the house.
Fred Grant is standing by Penny, his wife. I don't remember is this was taken before or after they were married. Penny's daughter is by them. The other young lady is Margaret Mitchel.
Each of these people were important in the life of Albin Leo Dittli. If you are interested in how they were important, then you should read Albin's journals, or ask Albin or Ada.