I have seen the ancestry of Lope Ruis de Esparza going back a number of generations, in some cases to a Martin Ruiz, Señor de Esparza. What are the documents that support this ancestry?

I have seen the ancestry of Lope Ruis de Esparza going back a number of generations, in some cases to a Martin Ruiz, Señor de Esparza. What are the documents that support this ancestry? Are they readily available?

Can anyone provide the details?

George Fulton