Born: January 18, 1856, Brooklyn, New York.
Died: November 30, 1931, Brooklyn, New York.
Buried: Green-Wood Cemetery, Brooklyn, New York.

John was the son of Wilham Brewer and Anna Eliza Neil. He married twice, to Emma Amelia Thayer (1888), and Cornelia Kouwenhoven Ives.
Remembered as a composer, teacher and organist, he lived in Brooklyn all his life.
Beginning at age 15, he played the organ at a number of Brooklyn churches, including the Lafayette Avenue Church (1881–1931).
He conducted many orchestras and glee clubs, and helped found the Brooklyn Apollo Club in 1878, becoming its conductor in 1903.
He helped found the American Guild of Organists, and belonged to the New York State Music Teachers’ Association.
In 1899, he became a professor of music at Adelphi College, Garden City, New York.