Identifying alternations in historical corpus data: the genitive alternation in Old English

Abstract This article revisits the diachrony of the genitive alternation, the alternation between ’s and prepositional phrases headed by of in Present-Day English. It is usually assumed to have developed around 1400 CE. For Old English ( c. 650–1000 CE), a different alternation between pre-modifying and post-modifying genitive-case-marked noun phrases is suggested to be the genitive alternation. Building on descriptions of competition between genitive-case-marked noun phrases ( gen ) and prepositional phrases with of ( of ) in Old English, and unpicking some of the preconceptions about the alternation in Old English, we propose a bottom-up method for systematically identifying possible alternation between of and gen in the York–Toronto–Helsinki Parsed Corpus of Old English Prose (Taylor et al . 2003). Our findings indicate that there is plausibly an alternation in Old English that stands in continuity with Present-Day English and suggest a more complex diachrony for the alternation characterized by continuity and discontinuity in the alternants and the envelope of variation.