I am the 2nd daughter of Fay Palmer Eckler. Fay was born 12-08-18 to William Henry Eckler and his wife, Alice Deffendorf. William Henry also has a daughter, Emily Eckler-Desmond residing in Little Falls, NY.
Alice Deffendorf researched extensively the Eckler family and wrote/published a book sometime in 1970's. She died in 1982(?) at the age of 92. I believe the book is available in the libraries in Little Falls.