The first six children of Levi Castle were born to a mother other than Olive Bronson since she could not have had a child in the 1770s when she was born in 1763-66. She is the mother of one known child. Levi Bronson Castle was born in 1791. We need to add an unknown spouse for Levi probably born in Litchfield, Connecticut about 1749 and died in Bennington about 1789-1790. Otherwise Olive makes no sense as the birth mother of the first six children.
Robert here is one I have been using lately because it is less restrictive without paying.
https://www.familysearch.org/tree/pedigree/landscape/L2BH-T32
I also have one on ancestry. https://www.ancestry.com/family-tree/person/tree/166795623/person/3...
and I have one on myheritage. Levi Castle