1744 CE, Thomas Salmon, Modern History or the Present State of all Nations; Volume I, The Present State of Proper India, Chapter XII, №. XIX, page #279:But to return to the marriages of the Jentoes, under which I comprehend all the ſects or caſts of Indian idolaters, they conſtantly marry in their own tribe or caſt, and they have as many ſeveral caſts as they have trades or profeſſions ; a merchant will not match into a mechanick tribe, or a mechanick into thoſe of a huſbandman or fiſherman.  Theſe have each other in as much abhorrence as they have Chriſtians ; but what is ſtranger ſtill, a mechanick of one trade will not match with a mechanick’s daughter of another ; a ſmith muſt not match into the carpenters or weavers caſt, or either of them into a ſmith’s, and ſo of every other trade…