The foremost of the Knights-Errant, Nathaniel Garro was once a Battle-Captain of the Legiones Astartes Death Guard. Though he served his Primarch with honour and dedication, he was condemned as unworthy and, along with countless thousands of Legionaries who could not be counted on to tread the path of the Traitor, was betrayed at Isstvan III.
Surviving to bring word of the treachery to Terra, Garro renounced his oaths to the Death Guard and pledged his life and loyalty to Malcador the Sigillite, swearing to undertake any mission, no matter how perilous, in the ultimate defence of
