About: http://webisa.webdatacommons.org/209397583

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	My Benjamin Thew was born around 1830, So your suggestion is a possibility.
http://www.w3.org/ns/prov#wasQuotedFrom	genealogy.com