The other day I was asked about "dark" names on Twitter. The names I came up with in the moment were Mournful, Posthumous, and Fathergone, but since then I've searched for others that were dark (or, alternatively, just sad) and found: one Melancholy, several Sombers/Dismays/Forlorns, some Miserables/Desolates/Sorrowfuls, and a surprising number of Glums/Gloomys/Dismals. Plus, there were far more Regrets (!) than I expected.
Some pics for you...
Somber Stuart (age 50) of South Carolina on the 1880 U.S. Census.
Desolate Hull (age 19) of Arkansas on the 1940 U.S. Census.
Hope Forlorn Silvey (age 13) of Virginia on the 1910 U.S. Census. "Hope Forlorn" is a strange pairing, isn't it?
Gloomy Gus Edwards (age 3) of North Carolina on the 1920 U.S. Census. The expression "gloomy Gus" originated as the name of a character in the comic strip Happy Hooligan (1900-1932).