Samuel Nolbrow

 was the captain of the schooner Mermaid.

Nolbrow was an honest man. When his ship sank, he felt that he should refund the Seventh Doctor's money. When conflict arose among the various shipwrecked crews on the Comet, Nolbrow, with the Doctor's help, was able to keep the sailors from fighting. (PROSE: Of the Mermaid and Jupiter)