Bohn/Keifer family connection wanted

John Bohn born 1882 stated his grandfather's name was Valentine. We recently found out his mother's name was Barbara Keifer and his father was John Bohn Sr. Can anyone tell us who all of Valentine Keifer's children were? Were are looking for any info about Barbara. John Bohn Jr's wife was from Elsace Lorraine. He arrived in USA around 1902.