death dates for below:

1.Trying to fill in some blanks on my mother's side of the family. I haven't found death dates for the following:

Seth Dwight [1723-?]& Joanna Kellogg [1727-?]

Alpheus Dwight [1760-?]& Fanny Prentice [1764-?]

Alpheus Dwight, Jr. [1787-?]& Clarissa Alvord [1792-?]

Sidney Alvord Dwight [1816-?]& Clarissa A.Clark [?-?]

last couple above are my great-great grandparents

2.Were Seth [above] and Timothy Dwight [of Yale] related ?

3.Looks to me that Joanna Kellogg was named for her aunt who was captured in the attack on Deerfield, Ma., and stayed in Canada.

Thanks for the help!
                     John C. Foss