Antique framed 19th century silhouettes dated 1831

Nice pair of silhouettes with fine detail. Information on back indicates that this is husband and wife and I think the last name is "Gibbons" I believe the artists name is "Thomson" and these were presented to the couple by the son and daughter.The glass is not original and the pieces appear to be cropped to fit the frames. Other information is written on the back but undecipherable. I am not sure if these are American or English. With all of this in mind there will be no return of the items. Price is for the pair.