There is a family bible for Jeptha S. Miller that contains "A Record of Samuel and Sophia Day's Family." I have a copy of this bible page as well as a typed transcription of it. It was online, but someone took it down. So I am concerned about copyright. However, it lists all the children of Samuel Day and Sophia Hayden. Mary and Phoebe Day were twins, born on the same day (September 7, 1800).
