Son of William Hamilton Charlton

The photo of John D. Charlton was safely kept by my grandfather Charles Allen Charlton who said John D. was his half-brother. Their father was William Hamilton Charlton, but they had different mothers. Charles Allen Charlton was b. 1868 in Iowa to William Hamilton Charlton and Anna Foster Worrell. My guess is that this half-brother, John D. Charlton was born ca 1862-1866 possibly in Iowa or Missouri to mother unknown and William Hamilton Charlton. Thanks, [contact link]