It says here
here that "In 1887, the Blasius & Sons Piano Company purchased the Charles Albrecht Company" so the 1915 Ridgeway was probably made by Blasius, not Albrecht.
There is a little about Blasius here
, but no mention of Ridgeway. It is possible that the Ridgeway brand was created by Blasius as a lower-priced line of pianos, but that is just speculation on my part.
I understand from your other post
that you are trying to decide which piano to keep - the Weber or the Ridgeway.
There are several signs just from the casework that the Weber is a higher quality piano. Weber pianos were among the best made in their day - the company and its pianos were in the same class as Steinway, Chickering, and Knabe (at least through 1903 when Weber merged with Aeolian, but Weber was still Aeolian's flagship brand).
If you can take off the upper, front panel of both pianos, and take some pictures of the insides and action of both, it will help as well, but really only an expert is going to be able to evaluate them both in person. It sounds like that your piano tech likes the Weber. Has he or she inspected the Ridgeway?
How do the two pianos play? How do they sound?