Joseph Gardner owned a sugar plantation called Estate Mount Tirzah in Savanalamar, Jamaica. Gardner’s business affairs concerning the plantation were unsettled at the time of his death in 1780. His brother, Theophilus Gardner, a merchant living in Philadelphia, spent the next several years trying to manage or sell the property from afar, and in 1789 went to Jamaica to deal with the estate.
Information about either Joseph or Theophilus Gardner is scarce. Theophilus was a member of the Westmoreland parish church and probably married Mary Dyer in 1758 in Philadelphia.
From the guide to the Gardner family papers, 1776-1789, (William L. Clements Library, University of Michigan)