There are several records for the marriage. Some are handwritten and some typescript - all are secondary summaries and there are two dates for the marriage: (8 Nov 1841) and (7 Oct 1841).
Robert and Mary Louisa had one daughter- Mary Louisa Shaw
Don't confuse this Robert with his nephew, Col Robert Gould Shaw, the noted Civil War leader and son of Francis Gould Shaw and Sarah Blake Sturgus
Sources
↑Death:
"Massachusetts, U.S., Town and Vital Records, 1620-1988"
Town and City Clerks of Massachusetts. Massachusetts Vital and Town Records. Provo, UT: Holbrook Research Institute (Jay and Delene Holbrook) Ancestry Sharing Link - Ancestry Record 2495 #47144010 (accessed 23 July 2022)
Robert Gould Shaw death 2 Dec 1853 (age 38) in Boston, Massachusetts.
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DNA Connections
It may be possible to confirm family relationships with Robert by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share some percentage of DNA with Robert: