I am also researching the surname Hackley. I have no specific information for you, but might be able to give you some possible place to look. A family bible of my hackley line lists an Emma Hackley born in 1867. I can only guess that she was born in or near Hendricks County, Indiana. I ahve a Samuel Robert HAckely born in 1875 in Hendricks county, his father James Richard Hackely born in Hendricks County, and his father Robert born in Kentucky. I hope this helps and will be glad to correspond further.