Donal Robson was an inhabitant of Tairngire. He was a surveyor, part of the team on Arden exploring the planet for settlement. He was replaced by Umbra with a duplicate. Donal was eventually found after Umbra was defeated and his duplicate destroyed. (PROSE: Shadowmind) Retrieved from "https://tardis.fandom.com/wiki/Donal_Robson?oldid=2744253" Categories: 27th century individuals Community content is available under CC-BY-SA unless otherwise noted.