Westmoreland has a wealth of natural history, especially regarding the sugar cane industry.

Barham District was originally known as Mesopotamia until the name was 'changed' to that of the plantation owner Joseph Foster Barham II [1759- 1832].

In December 1820 a total of 420 slaves were owned by the plantation but the numbers fell to around 329 in 1833 the year before slavery was abolished [1s1t August 1834] in Jamaica and all other British colonies around the world. 

The village of Banbury located approximately 2 miles south of Barham was the original capital of Westmoreland. Banbury is the location of a house formerly occupied by the colonel of Westmoreland John Guthrie who signed the treaty of peace in 1739 with Colonel Cudjoe, leader of the Maroons, during the struggle for freedom from slavery. Also at Banbury are graves of past British soldiers who fought against the Maroons

The Frome sugar factory was the scene of industrial action in 1938 led by Alexander Bustamante who formed the Jamaican Labour Party [JLP] and eventually became the first elected Prime Minister of Jamaica on 6th August 1962 when independence was gained.