Mary, Simeon Buchanan and Rachel Harned had a daughter Lucretia Jane Buchanan, she married Thomas DeKalb Bozarth.
Simeon's parents were Alexander Buchanan and Rachel Van/Vanscayoc. They had 12 children, John (my ggggrandfather), Jacob, Joseph, Jean, Reuben, Levi, Martha, Simeon (died young), Rachel, Nancy, Mary Simeon (yours).
Simeon and Rachel had six children, Eliza, Lucretia (married Thomas DeKalb Bozarth), Clifton, Sarah, Mary, and Helen. Simeon had a second marriage Amelia Spaulding. They had seven children, Nancy, William, Martha, Elizabeth, David, Malinda and Sarah.
I hope this helps and I have more if you would like. I can be e-mailed directly at pkallers@budsters.com