The Blackwood Knights were created when the Blackwood Company mercenary Xiianhuatl chose to split from the Company. Many followed him, and over the years they became famous mercenaries.
Disappearance in the Fourth Era
In the very first years of the Fourth Era, the knights went into hiding because of a contract gone wrong. Eventually they began taking jobs again around 4E 220. When Namir Azzan joined them, they mysteriously strengthened politically. When Namir became Grandmaster eventually, they captured the Aldmeri-Occupied cities in Hammerfell for themselves, Adawulf Sea-Born, and the Order of Vulcan.