I am pretty certain these are Lilly Barry and Edward McGary McKisick.  Edward was son of John Wilson
McKisick/Sarah McGary Wright.  Lilly was the daughter of Griffith Coombe Barry and Mary Wingfield Claybrook.  If anybody identifies them as anyone else, I'll not be too upset.  It's a wonderful
picture of the era.  Her dress is beautiful.
Donated By:  Brownie MacKie
 
Positively identified as Edward McGary McKissick and Lilly Barry.
Just wanted you to know that there's no doubt.