I wish I knew.
Martinez and Mendoza are Hispanic last names. They begin with the letter M.
Cruz is a common Hispanic last name.
Barrera is a Hispanic last name. It begins with the letter B.
Trujillo
Barcenas
Yes, it is common for Hispanic last names to generally consist of the paternal last name, which is then followed by the maternal last name.
Quintanilla Quintana QuinteroQuiñones
The spelling for the Hispanic last name that sounds like "Loo-roe" is likely "Louro" or "Loro." However, Hispanic last names can vary in spelling due to regional differences.
Icelandic No it is hispanic. Alejandro is the Spanish form of Alexander. Icelanders have patronyms not family names and so all Icelandic last names end in -son (for men) or -dottir (for women) preceded by their father's first name.
Martinez, Morales, Mendoza, Mendez, Moreno, Mesa, Medina, Mota, Machado, Maldonado, Maya, Manuel, Molina
If i were going to guess, i would say Ruiz, Garcia, and lopez, my last name is ruiz and I have searched it before where someone said ruiz was the most common.
Ortiz, Orellana, Ordones, Orejel. As odd as it seems, O'Higgins!