Hi Walter, I have some info that will be very helpful.Below is a paragraph from Donna Sabo in my communications with her on samuel and Rachel (Horner). This is what she said: Your welcome Bob..... I looked through my McComb notes and found that "our" Samuel did have family in the Chicopee/Springfield area when he came here when he was in his 20's. Namely a brother Hiram (we think) McComb who had a family here... Our Samuel's parents were Samuel & Rachael (Horner) McComb....they were from Northern Ireland and before that Scotland. There are many William's, Robert's & Samuel's in our family....so yours still fit into this picture very well.
If you input 369 in the box to the right of your message and hit go, you will come up with Donna Sabo's message.
I also have a 1990 census of Samuel and Rachel I believe. My wifes ancestors were also from Chicoppee Mass at the same time of your ancestors. Hope this is helpful! Bob Bayley