It's so nice to see someone else working on the Calvin Allen Line.
My family descends through Calvin and Eunice's son James Harvey.
I have begun working from family tree info passed to me years ago from a great aunt which lists Calvin's parents as Isaac Allen and Amy Dean (Daughter of Seth and Mercy Fenner Dean).Isaac's parents were Isaac Allen and Lydia Leonard. There is a tree up on familytreemaker.com showing descendants of Nicolas Allyn that I think Isaac may link into but I have no definitive proof at this time. I don't have my g aunts sources and have not confirmed all her research,but show the following:
1) Isaac Allen m Lydia Leonard 2) John 2) Jabez 2) Isaac m. Amy Dean(e) 3) Lydia 3) Mercy 3) Alice 3) Sarah 3) Eunice 3) Avery 3) Stephen 3) Calvin m. Eunice Delano 4)Polly 4) Lucius 4) Philo 4) William 4) Edwin 4) Angelia 4) Eunice 4) Calvin 4) Harriett 4) Benjamin 4) James Harvey 4) Susan Melissa 3) Jabez 2) Jonathan 2) Joseph 2) Mary (Allen) Holland 2) Lydia (Allen) Garner 2) Hannah (Allen) Cogswell
I would love to share information if you'd like to contact me.