The Antique Partnership has dated this piece to the 19th Century.
No evidence of any renovation can be seen by our eye. The owners must have regarded the portrait as important enough to pass it to F J Harris for work ...cleaning perhaps ?

The frame has its original gilding aged through time and some minor gesso damage (see lhs bottom corner molding) but is generally good.
Overall 85 max high by 71.5 max wide
The canvas about 49.5 by 63 cm high
The Antique Partnership has dated this piece to the 19th Century.
You can view the stock and full dealer information on the The Antique Partnership Profile Page