Kennedy was born at 83 Beals Street in Brookline, Massachusetts on Tuesday, May 29, 1917, at 3:00 p.m., the second son of Joseph P. Kennedy, Sr., and Rose Fitzgerald; Rose, in turn, was the eldest child of John "Honey Fitz" Fitzgerald, a prominent Boston political figure who was the city's mayor and a three-term member of Congress. Kennedy lived in Brookline for his first ten years of life. He attended Brookline's public Edward Devotion School from kindergarten through the beginning of 3rd grade, then Noble and Greenough Lower School and its successor, the Dexter School, a private school for boys, through 4th grade. In September 1927, Kennedy moved with his family to a rented 20-room mansion in Riverdale, Bronx, New York City, then two years later moved five miles (8 km) northeast to a 21-room mansion on a six-acre estate in Bronxville, New York, purchased in May 1929. He was a member of Scout Troop 2 at Bronxville from 1929 to 1931 and was to be the first Scout to become President. Kennedy spent summers with his family at their home in Hyannisport, Massachusetts, also purchased in 1929, and Christmas and Easter holidays with his family at their winter home in Palm Beach, Florida, purchased in 1933. In his primary school years, he attended Riverdale Country School, a private school for boys in Riverdale, for 5th through 7th grade.