Several women writers of recognized prestige in Spain, born during the 18th century, had Irish ancestry and, in some cases, we know of the existence of family and personal relationships that still connected them with their country of origin. The project proposes to explore, on the basis of the personal connections that can be traced through documents and literary-historical works, the different visualizations of their relationship graphs. Furthermore, the overall aim of the project is to validate the method of social network analysis in historical and philological research, as a method from which we extract first-rate research information as it shows us in a visual and effective way the similarities or differences between the different cases studied.