The Isaac your looking for, was he born 9-3-1871, died 7-26-1953 and was he married to Mary E. Boucher? If this is the same Isaac, I have some info on him, but very little. I'm willing to swap what I do have for any info you may have on the Thyfauls. You can e-mail directly at
laura7668@myfamily.com Look forward to hearing from you,
Sincerly,
Laura