Does House Gralhund still exist?

[…]"City of Splendors: Waterdeep" web-enhancement "Noble Houses of Waterdeep," House Gralhund had familial ties to the devil […]#DnD — MadHatterHimself (@Madhatterhim) July 6, 2017 […]Gargauth and as a result counted Tieflings among their ranks. My question is therefore this: Does House Gralhund still exist?And if it still exists, is it now made up entirely of […]