Lauder III was Commodore of the Indian Harbor Yacht Club in Greenwich, Connecticut.

[3] Originally commissioned for a prominent New York lawyer named George Lord Day, he died before she launched and was sold to professional yachtsman Lauder, of the Lauder Greenway Family, in January 1899.

There is some debate as to Endymion's correct identity, various sources suggesting a king, a shepherd or an astronomer.

Described in the New York Times in 1901 as "perhaps the largest schooner in the country",[5] the Endymion sailed in numerous regattas including the Kaiser's Cup to Bermuda and the Sandy Hook to Needles Race.

After the untimely death of Lauder in 1916, his family sold the yacht to Mr. Charles D. Vail of Palm Beach, Florida.