Sebastian Lee was born in Hamburg in 1805 and trained by the Romberg pupil Johann Nikolaus Prell. A soloist and teacher, he published his Cello Method Op. 30 in 1845 which is still available at Schott (ED965).
His barely known anthology First Steps in Violoncello Playing opus 101 contains 50 easy duets in the first position. The first cello part is easy to play while the second part is somewhat more demanding, yet still playable by pupils. A beautiful collection for beginner's lessons, with very melodious pieces covering all technical and musical aspects of cello playing.