Peggy Gerry was the daughter of Cato Gerry and Phillis Batchelder Gerry. She was baptised alongside her sister Flora at the Second Congregational Church on February 25, 1799 at the age of 17. No other records exist, though perhaps she is includes in the 1800 United States Census record for Cato Gerry in Marblehead.
Bibliography:
1790 United States Federal Census of Marblehead.
1800 United States Federal Census of Marblehead.
Marblehead, Early Vital Records of Massachusetts: From 1600 to 1850, https://ma-vitalrecords.org/.
Records of the Second Congregational Church of Marblehead, Marblehead Museum.