Joseph Holt was the U.S. Postmaster General during that time.
As another post office named Waverly already existed in Upstate New York, the name of the hamlet was changed to Holtsville in 1860, in honor of U.S. Postmaster General Joseph Holt.
Edward Holt was knighted and was a Lord Mayor of Manchester in 1908.
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Befriended by Joseph Holt, Schoepf served as a clerk first in the U.S. Coastal Survey and later in the U.S. Patent Office and the War Department (working under Holt).