Dionisio Aguado y García (1784-1849), born in Madrid, Spain, was a classical guitarist and composer during the late classical and early Romantic periods. He lived in Paris in 1826 where he became friends with fellow classical guitar composer Fernando Sor.

Popular Guitar Pieces by Aguado
Aguado is most well-known for his massive educational work Escuela de Guitarra, a reference that is still taught and discussed in guitar pedagogy today. Aguado was especially interested in improving the body posture, guitar and hand positions of guitarists.
Rondo Op.2, No.3
His most popular concert-level piece is the epic Rondo Op.2 No.3, seen here played by the great Julian Bream:
Aguado Studies
Want to learn a beginner Aguado piece for classical guitar? You can get my free edition of Aguado’s Estudio in Am here.
You can find even more free sheet music for Aguado here.