If a PC Dragonborn was born in the Shadowfell, could they…

If a PC Dragonborn was born in the Shadowfell, could they feasibly become a Shadow Dragonborn?

If a PC Dragonborn was born in the Shadowfell, could they feasibly become a Shadow Dragonborn using the same template?yeah, i’d kitbash that. cool idea — Mike Mearls (@mikemearls) September 2, 2017