Here is a little history about the statue:
Among the largest estates ever amassed on Long Island was the enormous Renaissance –style mansion known as Harbor Hill designed in 1899 by Stanford White and built in 1900 to 1902 for Clarence H. Mackay and his wife Katherine. The 648-acre estate, built in 1900-1902, was located atop the highest point in the area overlooking the village of Roslyn and Hempstead Harbor.
The estate was divided into formal gardens and terraces surrounding the main house and a 70-acre farm. In 1910, Katherine Mackay hired Jacques Greber to transform the Italianate garden into a French palace garden. A French garden specialist, Jacques Greber was a newly minted Ecole des Beaux-Arts medalist and would eventually develop a substantial trans-Atlantic practice. Greber created two intricate terraced parterres facing south and west of the Harbor Hill mansion. At the bottom of the west garden, he commissioned two 25-ton replicas of the Marly Horses statues.
The 26-foot statues and pedestals were carved by Franz Plumelet and installed in1920. With Clarence Mackay’s death in 1938, the Harbor Hill estate was left to his son John Mackay. Due to vandalism during the World War II, the mansion was demolished in 1947. The property was sold in the late 1950s and became the Country Estates housing development.
In the 1950s, the north-west "Mackay Horse Tamer Statue" was relocated to the “front yard” of Roslyn High School on Roslyn Road sponsored by Joseph Patrick of Old Westbury.
Led by former Roslyn High School students and with support from the Gerry Charitable Trust, the statue was restored with a new pedestal in 2019. It was dedicated on October 10, 2019.