The papers in this volume focus on the dynamics of one specific cell in morphological paradigms – the genitive. The high amount of diachronic and synchronic variation in all Germanic languages makes the genitive a particularly interesting phenomenon since it allows us, for example, to examine comparable but slightly different diachronic pathways, the relation of synchronic and diachronic variation, and the interplay of linguistic levels (phonology, morphology, syntax, and semantics). The findings in this book enhance our understanding of the genitive not only by describing its properties, but also by discussing its demarcation from functional competitors and related grammatical items. Under-researched aspects of well-described languages as well as from lesser-known languages (Faroese, Frisian, Luxembourgish, Yiddish) are examined. The papers included are methodologically diverse and the topics covered range from morphology, syntax, and semantics to the influence of (normative) grammars and the perception and prestige of grammatical items.