Florence Balsdon Gibb married Harbert Lee Pratt (1871-1945), businessman (president of Standard Oil), art collector and philanthropist, in 1897. They had five children: Edith Gibb Pratt (1898-1956), who married Allan McLane; Herbert Lee Pratt Jr (1900-); Harriet B. Pratt, who married Lawrence B. Van Ingen of Manhattan in 1923; Florence G. Pratt; and Frederic Richardson Pratt (1907-1966), who married Pauline Dixon Dodge.
After H.L. Pratt's death, she married Richard K. Webel in 1969.
Edith Gibb Pratt married Allen McLane (1894-1948) and had three children including Allen McLane (1928-1980); and secondly, she married Howard W. Maxwell (1896-1966).
Florence Balsdon Pratt bought Blue and Coral: The Little Blue Bonnet y500.
http://en.wikipedia.org/wiki/Herbert_L._Pratt
Mateyunas, Paul J., Long Island's Gold Coast,