This study describes the 1200-year history of German quantifying expressions like nioman anderro > niemand anderer nobody else, analyzing the morpho-syntactic developments within the generative framework. The quantifiers examined arose from various lexical sources/categories (nouns, adjectives, and pronouns) but all changed to adjectival quantifiers. These changes are interpreted as a novel type of upward reanalysis from head to specifier, which we associate with degrammaticalization driven by analogy. As for the quantified phrases, most appeared in the genitive in Old High...