What is jon's full name, written out in the spanish style? his first name is jonathan, his middle name is charles, his mother's maiden name is johnson and his father's last name is peters.

First Name, Middle Name, Paternal Name(Father), Maternal Name(Mother)

Jonathan Charles Peters Johnson

When a Hispanic/Latino emigrates to a predominately English-speaking country, erroneously the (maternal last name) 2nd last name is assumed to be the only last name of the person.
Jonathan may write his name as, Jonathan Charles Peters J.

Jonathan Charles Peters Johnson  

No, the correct way to answer that is -si, la quiero saber since it’s singular