Lydiah, d. William and Elizeberth, born Jan. 19, 1697. Groton, Middlesex, Massachusetts, Vital Records of Groton, Mass to the end of the year 1849. Salem: Essex Institute, 1926 p. 132
Then Manning's Paper says that John's will 1697 bequests to dtr Lydia Lakin and his wife's Mary's will mentions dtr Lydia Shepley.
So definitely two people.