[4] In 1894, she married Charles Oliver Iselin, a banker and sportsman who was described by Time magazine as "probably the most famed yachtsman in the U.S." during the latter part of the 19th Century.

"[6] Oliver Iselin was himself already a millionaire at the age of 40, made wealthy by his grandfather's investments in coal mining and railroads.

The Iselins owned many homes, including their primary residence in New Rochelle, New York, "All View", a palatial waterfront estate on a private peninsula overlooking Long Island Sound.

A breakwater was constructed adjacent to Premium Point in Echo Bay so that they could dock their yachts, the Vigilant, the Defender, and the Columbia, safely next to their home.

[citation needed] Iselin also served for many years as a director of the Martha Schofield School for the education of young African-Americans.