Where does “Mraconia” come from?

Mraconia (Romanian) comes from Serbo-Croatian mrak, from Proto-Slavic morkъ, from Proto-Balto-Slavic *markas, from Proto-Indo-European mergʷ- — dark, coloured; to flicker; to darken; to be dark.

Ancestry of “Mraconia”, step by step

StepLanguageWordMeaning
1Serbo-Croatianmrakdark, darkness; the bomb, the shit
2Proto-Slavicmorkъdarkness
3Proto-Balto-Slavic*markas—
4Proto-Indo-Europeanmergʷ-dark, coloured; to flicker; to darken; to be dark
Every word from Proto-Indo-European mergʷ- →Every word from Proto-Balto-Slavic *markas →Every word from Proto-Slavic morkъ →