McDonnel Parlor Furniture Frames

I have a settee and 4 chairs that I know are a bit over 100 years old. They were my grandmother's and she used them in her music room.

1 item I am able to find on the arm of the settee is the following ( not sure if it applies )

McDonnel
130 Exchange St
Portland
Parlor Furniture Frames

Any assistance would be great.