[1] She and her husband Hamilton McKown Twombly built Florham, a gilded age estate in Madison, New Jersey.

"[2] Born on Staten Island on January 8, 1854, she was a daughter of William Henry Vanderbilt (1821–1885) and Maria Louisa Kissam (1821–1896).

[4] Her paternal grandfather was the Commodore Cornelius Vanderbilt (1794–1877), of whom she was the last surviving grandchild when she died aged 98 in 1952.

[5] Florence was known for her many elaborate homes, including her townhouse at 684 Fifth Avenue in New York City that was designed by John B. Snook and given as a gift from her father, William Henry Vanderbilt.

[3] Her Vinland, a Romanesque "cottage" in Newport, Rhode Island, built in 1882 for tobacco heiress Catharine Lorillard Wolfe by Peabody & Stearns, purchased by the Twomblys in 1896 and greatly enlarged.

[10] A second townhouse was a 70-room house located at 1 East 71st Street, New York City that was designed by Whitney Warren and has also since been demolished.

Morristown farmer Caroline Foster was once invited to a dinner party at the Vanderbilt-Twombly Estate (now part of Fairleigh Dickinson University).