Arthur Jermyn was a noble man whose family was full of strange people such as adventurers, sailors and people who joined the circus. But the family members were not only strange - madness was in all the Jermyns. People were glad there were not many of them. The line put forth no branches - and Arthur was the last of it.
'Facts concerning the Late Arthur Jermyn and His Family' is a horror short story written by H.P. Lovecraft. As Lovecraft's both parents died in a mental hospital, it is believed that Lovecraft handled some of his own family issues in this very story.