Anna Maria Simpson
While I presume these pictures to be of Anna Maria Simpson (wife of Joseph MacDougall of Arnprior) and my great grandmother, I have no means of verifying this.

Anna Maria Simpson with George Eldon McElroy Jr. and Florence Evelyn MacDougall.
The annotation on the back of this photo reads:
Richmond, June 1922. You see Georgie is still fond of picking "May Flowers".

The person in the back is unknown, but on the basis of handwriting, it is not Florence MacDougall.
The annotation on the back of this photo reads:
My arms look all bumps, but thought it good of mother.
Guess I was too far in background. very dark.
Though you might like this of mother. taken this ? September.
Ida MacDougall perhaps?

The annotation on the back of this photo reads:
Arnprior, in the days of long ago.

The MacDougall House in Arnprior. I believe it was on Hugh St. but is no longer standing.