Here's the breakdown:
* Sanditon is the title of an unfinished novel by Jane Austen.
* The novel is named after the fictional seaside resort town that serves as the setting.
* Jane Austen's brother, Henry Austen, did not play any role in the naming of the novel.
* Henry Austen was a clergyman who was also a writer and a financial speculator.
It's important to separate the fictional world of Jane Austen's novels from the real lives of her family members.