Perhaps consider taking an entirely different approach via DNA technology.  Do you have access to the DNA test kits such as those sold by Ancestry and 23 and me?  In our extended  family a second cousin did this using the Ancestry kit and found several likely matches and all were found to be  related to us.  Discovered and previously unknown to all of us was that our great grandfather had a brother in New York and had a family.  I believe the connections are made possible through the Ancestry website in a manner that preserves your identity until you allow others to contact you.  Contact was made with  the 'other side' of the family and we were able to fill in some of the missing pieces.    Wish you success on your journey.
Alan