Castilian law developed during the Reconquest of Spain. Women received certain legal rights to persuade them to move to the villages on the expanding frontier. These legal rights were codified in Las Siete Partidas, the monumental work of Castilian law, compiled in the thirteenth century. Under Queen Isabella, Castilian law became the law of all Spain. As Spain discovered, explored, and colonized the New World, Castilian law spread. The Recopilacidn de Los Leyes de Las Indias complied the laws for all the colonies. Texas, as the last area in North America settled by Spain, retained Castilian law. Case law from the Bexar Archives proves this for the Villa of San Fernando(present-day San Antonio). Castilian laws and customs persisted even on the Texas frontier.

The question of decline in the historiography of seventeenth-century Spain originally included socio-economic analyses that determined the decline of Spain was an economic recession. Eventually, the historiographical debate shifted to include cultural elements of seventeenth-century Spanish society. Gender within the context of decline provides further insight into how the deterioration of the Spanish economy and the deterioration of Spanish political power in Europe affected Spanish self-perception. The prolific Spanish women writers, in addition, featured their points of view on manhood in their works and created a model of masculinity known as virtuous masculinity. They expected Spanish men to perform their masculine duties as protectors and providers both in public and in private. Seventeenth-century decline influenced how women viewed masculinity. Their new model of masculinity was based on ideas that male authors had developed, but went further by emphasizing men treating their wives well.