Find A Grave record only suggested as age at death on marker given as about 67, or about 1763 as birth year. There is a Silas B Moore 1762-1830 on Ancestry.
Sources
"Massachusetts Births and Christenings, 1639-1915," database, FamilySearch (https://familysearch.org/ark:/61903/1:1:VQDW-PYK : 4 December 2014), Silas Moore, 04 Sep 1766; citing RUTLAND,WORCESTER,MASSACHUSETTS, ; FHL microfilm 0599197 IT 3.
Is Silas your ancestor? Please don't go away! Login to collaborate or comment, or contact
the profile manager, or ask our community of genealogists a question.