Erin, I received a great amount of information from Ken Anthony, and believe I can help you connect Callie Canon.
The information I have on Caroline Mae (Callie) Canon is that she was born 1/21/1865 West Salem Twp., MC, PA.She is the daughter of Thomas Washington Canon, born 7/10/1718, in his 2nd marriage to Mary Jane Robison-Martin.
Callie has siblings from T.W. Canon's first marriage to Susan Waller of George S., Melissa Jane, Archibald Douglass, Teresa, Mason Waller, Parmelia Wick, Robert Marcus.(I am descended from Archibald Douglass Canon)
Callie has siblings from T.W. Canon's 2nd marriage of Susan Emma, Thomas Washington Elsworth, Mary Ellen (Nellie.
T.W. Canon's parents were John Canon (1788-1835) and Jane McFarland.Rootsweb.com will be invaluable at providing further info.
I also have info that Callie married Milton Slater, but you can probably confirm better than me.