My name is Diana and I believe I may have just come across a link in my own family's history. The children you describe having the parents of William Adair and Josephine (Mashakas) are my relatives. I'm sorry I can not be of too much assistance simply because I have no personal connections to this side of the family. I do know that Josephine ( now 84 years old) is last know to reside in Tamaqua, PA.
By no means do I have any great details on this family's genealogy but I just wanted to share with you that you have helped solidify my knowledge of who my grandfather was and gave me an idea of how many aunts and uncles I have/had.