The entry in the wedding registry of St. George’s Episcopal Church on Chapel (now Beekman) Street, dated June 13, 1820, reads simply “Seabury Tredwell to Eliza Parker.” The tying of the knot between 40-year-old Seabury and 23-year-old Eliza, officiated by the rector, Reverend Dr. James Milnor (1773-1845), was the start of a 45-year union. At …