[robowombat]

Onate called the last Conquistador, had a most interesting background and personal life:

Oñate was born in 1550, at Zacatecas in New Spain (colonial México) to a family of Spanish-Basque colonists and silver mine owners. His father was the conquistador and silver baron Cristóbal de Oñate, a descendant of the noble house of Haro. His mother was Doña Catalina Salazar y de la Cadena.[7] His ancestor Cadena fought in the 1212 Battle of Las Navas de Tolosa in Al-Andalus, and was the first to break through the line of defense protecting Mohammad Ben Yacub. The family was granted another coat of arms, and thereafter were known as “Cadenas”.[8]

Juan de Oñate married Isabel de Tolosa Cortés de Moctezuma, granddaughter of Hernán Cortés, the conqueror of the Triple Alliance, and the great-granddaughter of the Aztec Emperor Moctezuma Xocoyotzin.[9

[oldbrowser]

Truth be known, almost all of the old families of New Mexico are going to be related to the conquistadors of the 16th century. and probably many of the indian cultures of the time.
I don't recall the name of the investigator that did extensive ancestry tracking but the name of his book was called "somos primos", We are all cousins.