This paper surveys the emergence of the category humanness in the 3rd person singular personal pronoun in Alemannic (southwest German) dialects. The first part shows that some Alemannic dialects have developed a human/nonhuman distinction in the 3rd person singular neuter personal pronoun: a marked form encoding the human direct object has emerged. The emergence of this form can be explained by the differential object marking hypothesis. The second part reports on a pilot study of the 3rd person singular personal pronoun in Sense Alemannic on the basis of new data. In this dialect, humanness is distinguished not only in the neuter but also in the masculine and feminine. Additionally, some instances are observed that violate the differential object marking principle. Thus, both principles (humanness marking and the differential object marking) form part of the grammar, but the latter one may be violated.*

Personal pronouns belong to the most conservative parts of grammar; that is, they are diachronically fairly stable, as suggested by the fact that in many cases they can be traced back etymologically to or even beyond the earliest stages of reconstructible language history. This is why so far not much progress has been made in unraveling the genesis of personal pronouns: the number of cases where it has been possible to determine their origin is severely limited. Still, some data do exist and allow for the reconstruction of some major lines of grammatical evolution. As we hope to show in this paper, this evolution is the product of a handful of crosslinguistically fairly uniform cognitive and communicative strategies.