Leonor Lasso de la Vega (b. before 1367 - d. 1432) was a Spanish noble woman from Cantabria and head of the prestigious House of Lasso de la Vega from 1367 - 1432.
She was a lifelong benefactor of the Monasterio de Santa Clara de Castrojeríz which was founded by her grandparents, Garci Lasso de la Vega II and Leonor González de Cornado.[1]
Aldonza Téllez de Castilla y de la Vega (b. 1382 - d. 1449), who married Garci IV Fernández Manrique de Lara. The couple went on to become the first Counts of Castañeda. Their offspring went on to found the Marquesado de Aguilar de Campoo, the Ducado de Galisteo and the Condado de Osorno.
Gonzalo Ruiz de Mendoza, whose grandmother, Mencía de Cisneros]in her last will and testament of 1380 left him titles over Tierra de Campos and Vega with all its land and vassals.[2]
Teresa de la Vega y Mendoza, married Álvaro Carrillo de Albornoz.
In August 1432,[3] Leonor empowered her children Íñigo, Gonzalo y Elvira to draft her last will and testament, by which process, her daughter from her first marriage, Aldonza was disinherited.
After her death, all her domains went to the House of Mendoza through Íñigo López de Mendoza. In 1445 King, John II of Castile confirmed this action by granting the title of Marquis of Santillana, where after Santillana del Mar which became the center of the lordship of Torrelavega in Cantabria.
The Cantabrian surname "Lasso de la Vega" was passed on through this maternal line at later times throughout the years and is associated with various soldiers, poets, and golden age writers such as Garcilaso de la Vega, the soldier and poet, and Inca Garcilaso, the historian from the Viceroyalty of Peru.
^Real Academia de Historia, Colección Salazar y Castro, ref. M-19, fº 276v a 282: Marth 30th, 1420, Deed executed by Dona Leonor de la Vega, the wife of Diego Hurtado de Mendoza, granddaughter of Garcilasso de la Vega and Leonor de Cornado, founders of the Monastery of St. Clare of Castrojeriz, by which she donated to the monastery certain estates. "Archived copy"(PDF). Archived from the original(PDF) on 2013-06-13. Retrieved 2013-07-14.{{cite web}}: CS1 maint: archived copy as title (link)
^Real Academia de Historia, Colección Salazar y Castro, ref. M-5, fº 282 "Archived copy"(PDF). Archived from the original(PDF) on 2013-06-13. Retrieved 2013-07-14.{{cite web}}: CS1 maint: archived copy as title (link)
^Real Academia de Historia, Colección Salazar y Castro, ref. M-1, fº 137 "Archived copy"(PDF). Archived from the original(PDF) on 2013-06-13. Retrieved 2013-07-14.{{cite web}}: CS1 maint: archived copy as title (link)
The information on this page was mostly translated from its Spanish equivalent
Bibliography
Helen Nader, The Mendoza Family in the Spanish Renaissance (1350-1550)[1]