Gruham Rumdnul is a level 25 general goods vendor located in Menethil Harbor in the Alliance-aligned zone of Wetlands.
He appears to be the husband of Derina Rumdnul and the father of Gimlok Rumdnul, the only known male dwarf child in the game.
In patch 2.1.3 Gimlok Rumdnul, his son, appeared as a black male human child model.