Many believe that this splendid church was the work of a branch of the school that operated at S. Liberatore a Maiella. Just outside the town of Notaresco, Ermengarde, daughter of Emperor Ludovic II, commissioned S.Clemente in the 9th century.
Portal decorations bear the date 1108, which is presumed to be when the building was constructed.
The interior is a theory of reinforcing columns and pillars that support round arches marking space as far as the presbytery.
This latter is raised by ten steps and precious 12th century tabernacle, exquisitely carved by Roberto and Ruggero, can be found here.