Simplify the following text for a Grade 15 native English-speaking person.
Original: Jorge Manrique was a great-nephew of IÃ igo LÃ pez de Mendoza ( marquess of Santillana ) , a descendant of Pero LÃ pez de Ayala , chancellor of Castile , and a nephew of GÃ mez Manrique , corregidor of Toledo , all important poets of the late fourteenth and fifteenth centuries .
Simplified: Manrique was a great-nephew of IÃ igo LÃ pez de Mendoza ( marquess of Santillana ) , a descendant of Pero LÃ pez de Ayala , chancellor of Castile , and a nephew of GÃ mez Manrique , corregidor of Toledo , all important poets of the late fourteenth and fifteenth centuries .