I am also researching the Carroll Line. I believe Nancy's parents were Doctor Gray M. Carroll and Winifred Jones. They had four children: Richard Emmett (my great-great-great grandfather), Algernon, Nancy and one other girl. I found info on Gray and Winifred at ancestry.com. Gray died in 1842. The 1850 census had Winifred, Nancy and Algernon living together (Richard was in Norfolk or Richmond), 1860 had Winifred, Algernon, and Richard living together. The ages of the childrenand wife in the 1840 census of Doctor Gray M. Carroll fit the ages of Winifred, Algernon and Richard. I've just found out most of this info. If you would like copies of the censuses and trade what info we both have, email me at tomaci@gte.net.