I just recently began putting our "Elkind" family tree up on Ancestry and the lineage is difficult to determine further back than the late 1800's from Russia. After reading your post, I was particularly interested in the Morris segment. Although I think YOUR Morris is different than mine, there are some interesting similarities...
My Elkind lineage began through Morris, my grandfather. He was born in Russia abt 1891 and settled in NY. We don't actually know much about him prior to marrying my grandmother, Clara, and residing in Far Rockaway, NY.
Morris, however, never moved back to Toronto.
I have also found that the Elkind name is fairly rare (as I have met but one other Elkind in my life). Perhaps our trees will meet somewhere along teh way.