1908, Henry Clay Conrad, History of the State of Delaware, page 1057:
It is plain enough that the founders of the society adhered to their original purpose of promoting the practical advancement pro bono publico of the science of healing, not less than xenity and fraternity among its practitioners.
2011, John Taylor, Into the Heart of European Poetry, Transaction Publishers (→ISBN), page 300:
I admit to having myself been occasionally estranged, literally, by Brodsky's linguistic “xenity”: his quirky uses of American slang; his sometimes troublesome syntax with our uninflected language; his unidiomatic juxtapositions (whereby cuckoos and magpies “chirp”); or his not-quite-natural verbal tenses ...