Castello remained popular with Jamaican theatre-goers until 1818, when he reached puberty and his voice broke.
[1] William Adamson, who managed his own theatre company had arrived from Barbados, produced John Home's Douglas or the Noble Shepherd and cast Castello in the role of the Young Norval.
In July 1919, he appeared at the Pavilion Theatre, New York in the role of Caleb Quotem in George Colman's play The Wags of Windsor.
[1] However no accounts of further theatrical performance exist until he resurfaced in Kingston Theatre, Jamaica in July 1828 where he delivered George Alexander Stevens's comic monologue The Lecture on Heads.
[1] In 1836, he bought the Falmouth Post which he then published and edited as weekly newspaper up until his death in 1877.