In 1993, Thomas Greenway was infested with a Magelnian Twort which came through the Cardiff Space-Time Rift. When he died in 2009, Jack Harkness tried to get his family to have his body cremated to destroy the parasite. When they refused, Torchwood Three was there to kill the Magelnian Twort when it animated during the funeral. (PROSE: The Undertaker's Gift)