I have a Martha Shackleton, born about 1788 in Keighley, who married John Greenwood in 1818. She is somehow related to Phebe Shackelton, born about 1868 in Bingley (married a Shackelton/Shackleton). In 1841 and 1851 they all lived at Hermit Hole in Yorkshire. I am not sure of the relationship with Martha and Phebe except maybe sister-in-laws. Any ideas.