The Hernández de Arellano family
As I have shared in other media, a Toribio Hernández de Arellano from Salamanca is documented, whose brother Sebastián initiated litigation concerning his nobility on May 15, 1557. Following Sebastián's death in 1568, his widow and children continued the legal proceedings. Significantly, the presence of the Sánchez surname within their lineage may account for its recurrence among Toribio's immediate descendants.
Sebastián Hernández de Arellano "El Viejo" was a resident of the parish (colación) of San Isidro in Salamanca. He held estates (hacendado) in the municipalities of Villares de la Reina, Castellanos de Moriscos, and Villamayor. He initiated a lawsuit to assert his noble status (hijodalgo) after being appointed to the position of procurador, an office typically associated with commoners (pecheros), which he argued was incompatible with his noble standing.