William Alexander Dinsmore was born in York County, PA in the early 1800's. Parent Andrew and Jane Alexander Dinsmore. By 1850 he is married, with 3 of his 6 children born, living in Washington County, MD. I have not found a marriage license yet.

The children are:
Minerva Dinsmore who married John Delosier
Alvin Knott Dinsmore who married Mary Ellen Suman
Nancy Jane Dinsmore who married Jacob Bretzler
Emily Dinsmore
Elizabeth Dinsmore
James Dinsmore who I have found later living in Harrisburg, PA

I hope this helps. Will add details later.