In November 1703, at the age of sixteen, Catheryna Rombout married Roger Brett,[2] who had arrived in the New World with Lord Cornbury, governor of New York.

[2] The homestead, which during the 19th century was referred to as the "Teller House", is now named for Catheryna Rombout Brett, who was the first to develop the patent by selling property.

After the death of Catheryna's mother, the couple mortgaged the manor house in New York and moved to the wilderness of southern Dutchess County.

Revolutionary leaders such as George Washington, the Marquis de La Fayette, and Baron von Steuben are said to have been guests in the house.

The property now consists of nearly six acres (2.4 ha) of Madam Brett's original inheritance and features a garden, woodlands, and a meandering brook with a New York Big Tree.

The homestead's notable features include hand-hewn scalloped cedar shingles, sloped dormers, Dutch doors, and a native stone foundation.

Madam Brett Park's 12 acres (4.9 ha) hug Fishkill Creek, which played a prominent role in Beacon's development.

Along it stood a gristmill owned by the park's namesake – Catheryna Rombout Brett (1687–1764), with her husband Roger the first European settlers in the present-day city.

It furnishes a home for amphibians and aquatic mammals, including muskrats; serves as a hunting ground for ospreys, bald eagles and other raptors; and is a stopover for migratory birds.