The family came over with Cortez in fact he married an Arellano.The history in Spain is pretty easy to follow and tracking Cortez and the Arellano's in Mexico is fine until I lose them around 1600.Then I pick up the thread with Manuel Ramirze Arellano who came to San Francisco and was born in Puebla. Here is a message I got a year ago which helped.
WE Ramirez de Arellanos are members of the Royal House of Navarre-All of US-the history books of Spain are filled with the accomplishments of the family-one of the great grandfathers was El Cid the other was Don Sancho Ramirez III the Great, he was King of Navarre and Aragon and Conde de BArcelona he and his sons-our Uncles and Grandfathers founded Spain. Our family is in America 508 years check American history books Hernan Cortes married Juana de Zuniga Y Ramirez de Arellano-Trisatan de Luna was another Conquistador another was Francisco Pizzaro he was inlawed to us. Family still holds many Royal titles in Spain to this day. One Grandfather Sancho Sanchez was progenitor of the family-check list of crew on Nina-Pinta-Santa Maria lots of cousins (6) Gov Generals of New Spain numbered in the twentys that are related to us. Family member signed documents that created the Alamo. Lope de Vega wrote about five plays on the family and its members. Ramirez de Arellanos are not just Spanish, but they are SPAIN.