Analysis of information sources in references of the Wikipedia article "Bettiah Raj" in English language version.
A majority of the Bettiah Christians originally belonged to the high castes, a considerable number belonged to the occupational or middle castes
{{cite web}}: CS1 maint: numeric names: authors list (link)Catholics in the Bettiah region of Muzaffarpur diocese trace the origin of their faith community to Italian Capuchins, who set up a Christian community in 1745 with converts from upper- and middle-caste Hindus.
Cherubim John, a writer and historian, said the Bettiah community began after Italian Capuchin Father Joseph Mary Bernini cured the local queen of an "incurable" illness. The king donated 16 hectares of land later known as the "Christian Quarters" to the Capuchins. The king allowed Father Bernini, who was on his way to Tibet, to preach, and helped build a church next to his palace.