I was pleased to see your post, and I look forward to sharing information. Would you mind e-mailing me directly at email@example.com
On another message board, I just made contact with another person who is part of the same family tree... I believe her ancestor was a sibling to Gabriel and, according to her, their father's name was Vasil.
It appears that at some point, probably in Canada, Tabenski was changed to Tabelski. Why remains a mystery.
I look forward to hearing from you, and I will hopefully be able to share more information in the near future. Adam