When Polly Post was born on 4 October 1799, in Connecticut, United States, her father, Joshua Post, was 27 and her mother, Molly Dee, was 27. She married Abijah Pratt Jr. on 16 October 1816, in Connecticut, United States. They were the parents of at least 4 sons and 7 daughters. She lived in Durham, Greene, New York, United States for about 15 years and Rensselaerville, Albany, New York, United States in 1880. She died on 19 June 1881, in Oak Hill, Greene, New York, United States, at the age of 81, and was buried in Pratt Family Cemetery, Oak Hill, Greene, New York, United States.
North German, Danish, and Dutch: topographic name for someone who lived near a post or pole (Middle Low German, Middle Dutch post, from Latin postis), presumably one of some significance, e.g. serving as a landmark or boundary, or a habitational name from any of several places in northern Germany called Post, probably from this word.
North German, Dutch, and Jewish (Ashkenazic): metonymic occupational name for a messenger or mailman, from post ‘mail’.
Probably also an altered form of German Pfost .