https://www.dipublico.org/121479/primer-pacto-de-familia-entre-las-coronas-de-espana-y-francia-con-el-fin-de-estrechar-su-alianza-e-intereses-y-sostener-los-del-infante-don-carlos-se-firmo-en-el-real-sitio-de-san-lorenzo-del-escori/