No, Robert Louis Stevenson did not have children. Although he was married to Fanny Osbourne, they did not have any offspring together. Stevenson, who is best known for his works like ‘Treasure Island’ and ‘Strange Case of Dr Jekyll and Mr Hyde,’ often poured his experiences and thoughts into his writing rather than into parenthood.
Stevenson’s marriage was quite passionate and filled with adventures, but his lifestyle—marked by travel due to his health issues—likely influenced their decision to remain childless. Fanny had children from a previous marriage, and it seems Stevenson dedicated himself to being a devoted stepfather rather than pursuing fatherhood himself.