The information I have on Margaret being the daughter of Griffith and Ella Pridgen agrees with what you have. I have her being born about 1847. No further information on her than that. Griffith married a second time to Eliza Henry, and had about two children by his second wife. His father is a great-grandfather of mine. I hope you get a more informative response than mine concerning Margaret. I would like to know something about who and when she married and the date of death and place of burial.