When Joseph Elmer was born on September 16, 1718, in Windsor, Connecticut, his father, Joseph, was 40 and his mother, Jane, was 40. He married Sarah J. Burnham about 1748, in Hartford, Connecticut. They had nine children in 20 years. He died on July 4, 1769, in East Windsor, Connecticut, at the age of 50, and was buried in South Windsor, Connecticut.
It may be possible to confirm family relationships with Joseph by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
Y-chromosome DNA test-takers in his direct paternal line on WikiTree: