Willowmere (also known as Pearsall House) is a historic mansion located at 435 Bryant Avenue in the Village of Roslyn Harbor, in Nassau County, New York, United States.

Willowmere was originally constructed around 1750 as a 2+1⁄2-story, gambrel-roofed dwelling with a five-bay front facade.

It was the property of Admiral Aaron Ward (1851-1918) – a rose lover.

[2] The portico was added in 1926, when the house was renovated to the Colonial Revival style.

This article about a historic property or district in Nassau County, New York, that is listed on the National Register of Historic Places, is a stub.