This article examines the marriage strategies, together with inheritance and social customs, of a stem family household in Catalonia over 300 years. The study is based upon family reconstitution of the village in question from 1608 to 1935, together with the rich archives of the family itself. Examination demonstrates that marriage strategies leading to the biological and social reproduction of the family were the main goal of well-to-do Catalan stem families. This goal was closely linked to the maintenance and/or increase of the family's inherited wealth, mostly in the form of arable land. Women were a cornerstone of marriage strategies. They could bring wealthy dowries to a family, and also they produced the heir or heiress who would continue the household. The women who were not heirs wove important networks of social relationships which were of great importance for their birth households.