My great grand uncle John Fleming and his wife, Joanna (Maxwell) Fleming. I am not sure when the picture was taken, he was b 1834, she was b 1840.
As it says in the image:
Joanna Maxwell Fleming (September 10th, 1840 - 1902) married on November 2nd 1856 in Valparaiso Porter, Indiana John Fleming. John was the 2nd white child born in Porter County, son of Jacob and Catherine Kittery Hesser Fleming. John Fleming was born on March 1st, 1834 and died April 8th, 1928.