Dear Friends, In 2014, I completed eight years co-researching a famine era, adult-male, Irish immigrant to Ossining, NY, with the immigrant's descendant. The descendant compiled a book from our findings. My best suggestions from this experience are: l) Keep your minds open to surname spelling alternatives. We found one in 1860 Ossining w/o any vowels. 2) Dig deep: Run every surname from the same era through Ancestry and view other towns nearby where you first located your ancestor. 3) Search for siblings nearby. Seek those with birthdates slightly older and younger. 4) Be willing to thumb through and read every page of a ward in a census to find your Irishman. 5) View every online index for all of your surnames at the Westchester Archives site. May all of your leads be good ones! Barb