a Registered Historic Place. As the city below grew, the area quickly developed residentially. At the same time, an upper-middle class residential area, marked by brownstones built in an elaborate and architecturally daring fashion, started to grow along Alexander Avenue by the 1890s (Doctors' Row, aka the Irish Fifth Avenue). A series of brownstones on East 134th Street, east of Willis Avenue., was known as Judges' Row. Soon after, the Bronx grew more quickly, especially with public transit into the area, including the Third Avenue Elevated Line. By the early 20th century, the population density of the area supported the construction of many tenement-style apartment buildings. From the end of the 19th century through the 1940s, Mott Haven was a mixed German-American (north of East 145th Street) and Irish-American neighborhood (south of East 145th Street), with an Italian enclave west of Lincoln Ave. The first Puerto Rican settlements came in the late 1940s along the length of Brook Avenue. African-Americans came into the area when the Patterson Houses were built. It was organized by the veterans of the Irish Republican Army, who marched every Easter Sunday, down Willis Avenue from the Hub to East 138th Street, then west to St. Jerome's. The Star of Munster Ballroom at the northeast corner of Willis Avenue and East 138th Street was a center of Irish music for decades. It was speculated at one time that there were more bars on Willis Avenue than on any other city street, given its short length. More recorded Irish musicians lived in Mott Haven than in any place outside Ireland. "South Bronx" and late-20th century Mott Haven and Port Morris were the first neighborhoods to give rise to the term "South Bronx". Together, they were earlier known as the North Side or North New York. This area was part of New York County after the incorporation of Greater New York in 1898. The Chase Manhattan Bank at Third Avenue and East 137th Street was originally the North Side Board of Trade Building (1912). It later became the North Side Savings Bank, which became the Dollar Dry Dock Savings Bank, which became Chase. In the 1940s when the Bronx was usually divided into the East Bronx and West Bronx, a group of social workers identified a pocket of poverty on East 134th Street, east of Brown Place, and called it the South Bronx. This area of poverty would