Beattie Triangle, bounded by Broadway to the northeast, Vernon Avenue to the south, and Stuyvesant Avenue to the west, is named in memory of Joseph S. Beattie, who lived at 247 Schenectady Avenue in Brooklyn. Beattie served as a Private in Company G of the 305th Infantry in the United States Army in World War I and died on a battlefield in France on October 5, 1918.
Beattie Triangle is one of the oldest public parks in Brooklyn. Anton and Mary Vigelius deeded it to the City of Brooklyn in 1884 for one dollar on the condition that "the same shall be enclosed with an iron fence and forever kept as a public park or place." In 1898, when Brooklyn was incorporated into the City of New York, the deed was transferred and came under the jurisdiction of Parks. At the insistence of the Beattie VFW Post, Beattie Square was named by local law in February 1921.