Wallingford Land Records (2:784, FHL 6018) Joseph Cook married Eleanor Johnson October 28, 1714
Families of Ancient New Haven, Vol 1, by Donald Lines Jacobus, 1923, p. 436. Ref. is Wallingford Vital Records. Genealogical Data of Early New Haven and Conn. Families, p. 12A records that he married Eleanor Johnson, daughter of Walter on Oct. 28, 1714. Also his death date is there.
Although all sources, including Births, Marriages and Deaths at Wallingford, Ct. 1670-1821, manuscript transcription, FHL 6052, p. 47 and "Families of Ancient New Haven," Vol 1, by D L. Jacobus, 1923, p. 436. (Ref. is Wallingford Vital Records) claim there was a marriage before this, it has been proven it was another man named Joseph Cools or Cole. The Vital Records Index is a transcription of primary vital records, and the transcriber made a mistake. It makes sense because Joseph would have been 17 years old for that marriage, and such a thing almost never happened in Colonial America.