The Lawrence family of New York and Rhode Island, intermarried with the Woodhull's , Floyd's, Thorn's and Smith's which kind of insured some of them would wind up in Mastic.

Through the 19th century and partly into the twentieth various members of the Lawrences occupied most of the land from the east bank of Pattersquash Creek to the current west boundary of the Floyd Estate. For most of the time they owned the property, I would surmise most land transactions occurred privately via their inheritances. It was from Frank Lawrence that J. F. Knapp would buy the property that would be known from then on as the Knapp estate in 1916. Here is how Frank Lawrence of Providence Rhode Island acquired the property, at auction in New York City from his own family twenty years prior to selling it to Dodi Knapp.