William E. Samples and family

This is a family portait of William E. Samples and his family taken in about 1908. William was born in 1886 in Kansas and the 3rd son of William Henry and Sarah Ann Fanning Samples. William died in 1919 on a farm 7 miles southwest of Elk City and his obit list "a wife" and "13 year old daughter" but did not give their names.

This photo does not have clear identification on the back. In fact at first glance, there is no writing until held up to the light at an angle and indention on the paper shows William Samples' name, but not the name of his wife and child. Does anyone know his wife and child's name. It is unknown what happened to them after he died.