Glenbrook

Glenbrook was originally known as watertank due to the storage of water in tanks for the steam trains. In 1874 the name was changed to Wascoe Siding.
In 1877 a passenger platform was erected and in 1878 the name changed to Brookdale. In 1879, the name changed permanently to Glenbrook.

The name Glenbrook is the original name given by Sir John Jamison who, exploring the Nepean, sighted a pretty brook he presumed had its headwaters in the Prince Regents Glen at Wentworth Falls, hence the name Glenbrook. The name was later conferred to the surrounding district.