Ellwood is a neighbourhood bounded by Walkley Road on the north, the O-Train corridor on the west, Albion Road on the east and the Walkley Railway Yards on the south.
Until the 1960s, a railway junction existed behind the LCBO warehouse on Bank Street and that had the 19th century name of Chaudiere Junction.
In 1906, a post office was established and was named Ellwood in honour of two local families, the Ellis family and the Wood family. The post office was located just south of Ledbury on Bank Street and was operated by Jane Cutts in her general store, which dated back to the 1870s. The post office closed in 1943.
A school house, Gloucester School Section 3, was built in 1856 and was located on the site of an apartment building on Bank Street just north of Ledbury Avenue. It served Gloucester students of the area until 1956 and Ottawa Public School Board students for a year or two beyond that. It was used for private businesses until it was demolished in 1984.
A small railway station existed somewhere south of Walkley Road and likely existed until passenger service ended in 1957.
During the pre–World War I land boom, subdivisions were registered covering the area between Walkley Road and Ledbury Avenue and between Bank Street and Albion Road. These were named Ridgemont Park and Paardeburgh Park (in honour of a Boer War battle). Only a small number of houses were built.
During the early 1930s, hydro towers were built between Kitchener Avenue and Ledbury Avenue.
Around the start of World War II, a dance and reception hall named the Right Spot Inn was built on the corner of Ledbury Avenue and Bank Street and lasted for about 10 years.
As a result of the Greber Plan, the original village was expropriated in 1949 and 1950 to make room for the Walkley Railway Yards, the Bank Street overpass and a never built federal parkway. All the houses and other buildings with the exception of the school were either demolished or moved.
About this time, many houses began to be built in the earlier mentioned pre–World War I subdivisions except in the hydro and parkway corridors. This gave the community its current general appearance.