Jonathan was born on December 21st, 1745.1 Jonathan's father was Jonathan Alvord and his mother was Charity Thrall. His paternal grandparents were Jeremiah Alvord and Sarah Eno. He had a brother and a sister, named Joseph and Charity. He had two half-brothers and a half-sister, and also a half-sibling of unknown gender, named John, Unknown, Elizabeth and James. He died after 1784.1