Do you have any additional info, such as the name of his wife, when he married, where in Canada he lived? There are quite a few men named David Boyd who lived in Canada in teh 1800's. Examples: familysearch.org/ark:/61903/1:1:MW51-KQN familysearch.org/ark:/61903/1:1:MWRS-ZT2 familysearch.org/ark:/61903/1:1:KDRN-833 familysearch.org/ark:/61903/1:1:MWTH-SJ5 familysearch.org/ark:/61903/1:1:KMGM-D4P