I found this record using FamilySearch. I think this is the marriage info for William and Vashti, even though Vashti is shown as Nashty.
Name: William Nucomb
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Spouse's Name: Nashty Cole
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Event Date: 01 Nov 1750
Event Place: Eastham,Barnstable,Massachusetts
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Indexing Project (Batch) Number: M50246-6
System Origin: Massachusetts-ODM
GS Film number: 905406
Reference ID:
Citing this Record:
"Massachusetts, Marriages, 1695-1910," index, <i>FamilySearch</i> (
https://familysearch.org/pal:/MM9.1.1/FC4F-RMV : accessed 01 Oct 2014), William Nucomb and Nashty Cole, 01 Nov 1750; citing reference ; FHL microfilm 905406.