Hundred of Evan, New South Wales

The area had been settled for several decades, and was originally known as the District of Evan, and was founded on the eastern side of the Nepean River. It was named in honour of Sir Evan Nepean. The earliest known newspaper reference to the Evan District dates to 1803,^[4] when the first grants of land were issued there.

Evan District's first town, Castlereagh, was one of the five Macquarie Towns, planned by Governor Macquarie in 1810.

However, over time, Castlereagh became overshadowed by the area's other significant town, Penrith, which grew up at the crossing-point of the road over the Nepean River, leading to the way over the Blue Mountains. The gradual disappearance of the district's name, Evan, was helped by its often being displaced by the more popularly used name of the nearby river, the Nepean.

• The Parish Map, Board of Surveying and Spatial Information of New South Wales
• A map of the County of Cumberland in the Colony of New South Wales, 1840. National Library of Australia MAP F 263.
• A map of the County of Cumberland in the colony of New South Wales 1848. National Library of Australia MAP F 104