Cordwood "Cordy" Mather appeared for the first time in the book Shadow Games.
Cordy was from the Free City of Roses, where he had served in the military, and had traveled thousands of miles south with his friend Willow Swan. On the way, they rescued a man named Blade who had been thrown to the crocodiles. Blade joined them in their travels and they became a close-knit group.
Taglios had been pacifist for generations, so the Taglian royal family approached him, as well as Swan and Blade, to organize the protection of Taglios against the first invasion from the armies of the Shadowmasters. He used tricks that he had learned from the Black Company's campaign near Roses to trick the Shadowmasters army into small prepared towns which were burned around them. They destroyed the five thousand man force sent against them, and set out to welcome the Black Company and attempt to enlist them into service.
Cordy watched the Battle of Dejagore from afar and witnessed the Taglian forces lose. Taglios had become his home, so he began work to continue its defense and the war against the Shadowmasters.
He became a paramour of the Radisha Drah, the sister of Taglios's prince, the Prahbrindrah Drah. He served closely as her advisor at this time and was sent out to investigate the progress of the war as Croaker launches the Battle of Charandaprash and the Siege of Overlook. He was captured by Croaker's forces after the Prahbrindrah Drah betrayed them, and was forced to proceed on the scouting mission onto the Plain of Glittering Stone. There, Soulcatcher trapped him, along with the rest of the Captured, in the Cave of the Ancients.
For reasons unknown, he awakened from stasis in the ice caverns and attempted to awaken several friends, but as he did so without the requisite sorcerous precautions, those he touched died. He then attempted to crawl down a small side passage, but was killed by a mechanical booby trap.