The Letatus sum for four voices ascribed to Jalón in E-OLI s.s. (pp. 7-14) is not listed by Ezquerro Esteban among the works by Luis Bernardo Jalón, a composer that has been cited with different first names (Luis Jerónimo, Luis Bautista). Ezquerro suggests that perhaps there were two composers with the same last name Jalón (Luis and Bernardo or Luis Bernardo and Luis Jerónimo) and that he could be confused also with the organist Pedro Jalón y Tejada who died in 1655.