The Socialite: The resident of Madison Avenue, Newport, and Long Island divorced William Kissam Vanderbilt and got a rumored $10 million settlement before marrying banker and congressman Oliver Hazard Perry Belmont. In 1883, she had 1,200 guests to a masquerade ball that was said to be the most expensive New York party of its time.

The Suffragist: As a widow, Belmont became a major benefactor of the National American Woman Suffrage Association before shifting her allegiance—and resources—to the more militant National Women’s Party.

The Socialite: The chatelaine of a Stanford White-designed home on Long Island—when she wasn’t in Paris, that is—she oversaw the refurbishment of the Roslyn Public Library and was the first woman to serve on the town’s school board.

The Suffragist: She was a founder of the Equal Franchise Society, and financed legislative campaigns in Albany in 1909 and 1910.

The Socialite: The wife of the president of the National City Bank (now Citibank) was known for entertaining at Beechwood, her 77-acre Westchester spread, and Villa Narcissa, the Palos Verdes, California estate she once rented to the movie star Myrna Loy.

The Suffragist: She chaired the New York League of Women Voters from 1919 to 1923. Later, she was president of the New York Infirmary for Women and Children.

She’s pictured here on the right.