Well I'm not sure if we are related in any way. Although I am the forth Bill in the family my GreatGrandfather had a different middle name(not sure what it is) so I'm the 3rd. My father William Edward Lancto Jr was born and raised in Holyoke. My family is scattered around Holyoke, Chicopee and SouthHadley. All of these towns/cities are pretty close to Springfield.
Also I have discovered that my greatgrandfather also had three more daughters in a previous marriage. Unfortunatly I dont know their names. It is possible you are mistaking my grandfather was William Lancto Jr. But yes he does have an older sister named Jean. I will ask my grandfather about the names of his cousins. If they are a match then we are most likly related.
And I also found out that my GreatGrandma Rita's maiden name was King.