I agree with Joe. Pictures of the face plate and the tensions would be better help identify. Sometimes the leaf tension can give a clue as to who made the machine.
The Norwood could be a Standard, but it doesn't look like the one badged Norwood on needlebar.org. I didn't see any Companion by itself; There was a "New Companion" & "Companion City" for New Home and National respectively. Needless to say, needlebar doesn't list them all and there could be some that are badged from some other company.
Looks like those will keep you busy for a bit.
Janey - Neat people never make the exciting discoveries I do.