I look at our web site. Your Isaac T. Sparks is a brother to my George Sparks. George is my 5th great grandfather. Their father is Isaac Sparks. Your Frances Crawford is a sister to my Nancy Crawford Sparks ( who is my 4th great grandmother). Nancy married William Sparks, who is the son of George Sparks and Elizabeth Wells. Frances and Nancy parnets were Joseph Crawford and Elizabeth Townsend. If my informortion is right. You may already know this, but I thought is was neat.