With the publication recently of two valuable studies on Attic demes, we are now more fully aware of what we know, and do not know, of the deme. With Osborne's work, we now have some idea of the tendency of Athenians to own and maintain property in the deme of origin, but the role of marriage in consolidating property in that deme is more difficult to assess. In contrast to Osborne's focus on the ancestral deme, this brief study will concentrate on the deme into which the woman married; such a deme will be termed the deme of marriage or the marital deme. The study will focus particularly on the families who contracted more than one alliance for their kinswomen into the same outside deme and will emphasize the importance of siblings in securing and maintaining these alliances in the marital deme.