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Male Henry H. Slingsby Click to view Henry H. Slingsby in the family tree

1   Henry H.'s father was William Slingsby and his mother was Mary Unknown. He had a sister named Mary A..  He died on November 30th, 1863.1 

1 phelps.FTW @ Tree #0105
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #0105, 0105.ftw @ Tree #0105, CT State Library Hale Collection of Cemetery Inscriptions Vol. 56