The word Ramirez means "of Ramiro."Or "es de Ramiro"
We have to remember that last names didn't exist as we have them and children would take their fathers first name.
Just as Ramiro's son had his grandfathers first name and fathers first name together. Sancho Ramirez
Here's the known start of the Last name.
The word Ramiro is a Visigoth word, perhaps meaning from the Reimers river (in Germany?)
Ramiro I, King of Aragon, b. ca. 1031 in Aragon, Spain, d. 8 May 1063 in Aragon, Spain, He became King of Aragon, 1035 in Aragon, Spain
Father: Sancho III "the Great", b. 970 in Navarre, Spain, d. 1035 in Navarre, Spain, He became king of Aragon, 1000 in Aragon, Spain, He became king of Navarre, 1025 in Navarre, Spain, He proclaimed himself King of Spain, 1027 in Spain, He became king of Castile and Leon, 1027 in Castile, Spain Mother: Daughter of Deniz Castile, b. ca. 970 in Castile, Spain Spouse: Gerberge, Countess of Bigore, b. 1043 in Carcassonne, Aude, France
Sancho V Ramirez, King of Aragon, b. bef. 1063 in Aragon, Spain, m. Felicitas, Queen of Aragon, ca. 1083, d. June 1094 in Huesca, Spain, He became King of Aragon, 1063 in Aragon, Spain, He faught the Moorish kings of Saragossa and Huesca, 1080/9 in Spain, cause of death was the Seige of Huesca.