According to my grandfather, there were three Scannell brothers that immigrated together.Our line is traced from Florence George Scannell, one of those brothers.They arriveed in new England, and Florence George ended up in Iowa.This is somewhat confirmed by this quote from http://www.bonanzajellydog.com/gene/scannell.htmlhttp://www.bonanzajellydog.com/gene/scannell.html
"Florence George Scannell immigrated from County Kerry, Ireland around 1861. He arrived in either Boston or Quebec, possibly with two brothers, and then made his way to Canton, Lawrence Co., New York."
My grandfather was a grandson of Florence George, and ended up in Rhode Island, where I was born.As far as I know, we haven't had any contact with the other two brothers, though my grandfather said he did think there was a "Scannell Trucking Company" of some kind in Rhode Island.
I know that was a lot for not exactly answering your question, but I just wanted to throw out that I, too, would be interested in finding these other two lines of the Scannell family.