There is a GEDCOM file at ancestry.com posted by Peter Champion
(descendant of Huldah McC., resides Visalia)
which lists Jehu Roberts as the father of Mary Jane Roberts.

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According to the 1880 Census data for Mary Jane Roberts, her
father was born in England, and her mother in Pennsylvania.

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There is a Jehu Roberts listed in the 1820 U.S. Census
for Drumore Township, Lancaster County, PA, page 292.