Elizabeth E. Harbaugh, Louisa E. Sites, Sarah E. Sanders

I have a great deal of information about Jeremiah B. Sites, and 5 generations of his descendants, including his son Andrew J., George Frederick, and John Calvin, and their families, with documentation. I am more than happy to share.

I am not directly related to him, but I am related to his wife, Louisa Eyler Sites. I am trying to find anyone who may have information about her parents, so I decided to research their descendants to see if I could find anyone with any information about the Eylers.

Louisa Eyler Sites is the sister of my 3rd great grandmother, Elizabeth Eyler, who married Elias John Harbaugh in Emmitsburg in 1834
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These two sisters had at least one other sister, Sarah Eyler, who married John Sanders,in Maryland, after 1850,and lived their lives in Maryland as far as I know.. I don't have a lot on her family or descendants, but I do have a little.

The three girls were apparently born and lived near Waynesboro, until early in their lives, their father moved them to Fredrick County, specifically Emmitsburg area.
I do not know if they had any brothers or other sisters.

These Eyler parents have been a major brick wall for 3 generations or more of researchers.Any assistance would be appreciated.