Ralph Middleton Munroe (April 3, 1851 – August 20, 1933) was an American yacht designer and early resident of Coconut Grove in south Florida. His home, now The Barnacle Historic State Park, is the oldest house in Miami-Dade County still standing in its original location.
Munroe was born to Thomas and Ellen Middleton Munroe at their family home on 22nd Street near 4th Avenue in New York City on April 3, 1851. Munroe's grandfather was William Munroe who made the first American lead pencils in 1812. In 1854, the Munroe family moved to Clifton, Staten Island where Munroe spent his childhood. He lived in a large home at 104 Townsend Avenue. Growing up near the sea, he became fascinated with the boats that were essential to island life. While a student at Eagleswood Military Academy, near Perth Amboy, New Jersey, from 1861 to 1864, he purchased the "Hornet" for a mere $2.00, the first of many boats he was to own.
After briefly attending Columbia University in New York City, Munroe participated in a number of lucrative business ventures as well as yachting adventures. In 1874, he encountered William Brickell off of the coast of Staten Island, a meeting which would change his life. It was from him that Munroe learned more of Biscayne Bay, which he visited for the first time in 1877.
At age 28, Munroe married Eva Amelia Hewitt in 1879 and established his permanent home at Great Kills, Staten Island. Two years later, she gave birth to a daughter, Edith Munroe. The joy of his daughter's birth was met with tragedy, however. Within the next few months, Eva contracted tuberculosis and in the hopes of recovery, Munroe brought Eva; her sister, Adeline, also tubercular; and their brother to Biscayne Bay. His daughter Edith died in her grandmother's care shortly after their departure. Eva died in April 1882. She is buried on the grounds of the Coconut Grove Library. This is the oldest marked grave in Miami. A devastated Munroe soon returned to Staten Island.