The name refers to the Jammasin tribe, a plural form of the Arabic word "jammas", meaning a water buffalo grower. Al-Gharbi is an adjective which means "the western", pertaining to the western part of the tribe.[5]
History
Al-Jammasin's inhabitants were known to be descendants of nomads from the Jordan Valley.[1] In 1596, a Jammasin tribe appear in the Ottomancensus, located in the Nahiya of Bani Sa'b of the Liwa of Nablus, paying taxes on water buffalos. Khalidi writes that it is not certain that this was the same tribe that settled the two Jammasin villages.[6] The tribe was known to have settled in the area by the 18th century.[1]
In the 1945 statistics the population of Al-Jammasin al-Gharbi consisted of 1,080 Muslims[2] and the total land area was 1,365 dunams of land, according to an official land and population survey.[3] Of this land, Arabs used 202 dunams for citrus and bananas, 151 for plantations and irrigable land, 173 for cereals,[9] while a total of 149 dunams were non-cultivable areas.[10]
In December, 1947, Jewish agents reported that Arabs were leaving the Al-Jammasin villages.[11] In December 1947 and January 1948 the leaders of al-Shaykh Muwannis, Al-Mas'udiyya, Al-Jammasin al-Sharqi/Al-Jammasin al-Gharbi, and the mukhtars of Ijlil al-Qibliyya, Ijlil al-Shamaliyya and Abu Kishk met with Haganah representatives in Petah Tikva. These villages wanted peace, and promised not to harbor any Arab Liberation Armies or local Arab Militia. They further promised that, in the case they were not able to keep them out alone, they were to call on Haganah for help.[12] The Jammasin villages, together with Abu Kishk, also jointly approached a Jewish police officer at Ramat Gan.[13]