As pointed out by José López-Calo and Cristina Diego Pacheco, documents related to the brothers Alonso, Pedro and Rodrigo Ordóñez often do not mention the first name, and thus it is difficult sometimes to ascertain their identity. In E-V 05 there are four polyphonic works attributed to Alonso Ordóñez and one to "Rº Ordóñez"; although the initial in the latter ascription has been interpreted as "Racionero" (to refer to Alonso Ordóñez), it is most likely that it refers to Rodrigo Ordóñez. There are no known works attributed to Pedro Ordóñez.

López-Calo mentions many possible locations that can or could be related to Rodrigo Ordóñez.