Not OP but they mentioned in another comment that their third grandfather (the father in the picture) was born on December the 25th 1815 but that the picture was taken around 1878. So the date in the title refers to his birth that happened exactly 207 years ago and not to the date the picture was taken (even though that would be more common in this sub).
BigMissKnowItAll t1_j1nby0s wrote
Reply to comment by Swifty912 in December 25, 1815 - Happy birthday to my 3rd Great-grandfather! by NotOK1955
Not OP but they mentioned in another comment that their third grandfather (the father in the picture) was born on December the 25th 1815 but that the picture was taken around 1878. So the date in the title refers to his birth that happened exactly 207 years ago and not to the date the picture was taken (even though that would be more common in this sub).