Tanfin Illian is the son of Dafydd Illian and Constance Sims. He is the most Elvish of their five children. In the year 2030 HST, he travelled back in time to meet his sister, Jasmine Sims. He ended up in Rome, and briefly met Jay Thorntree and Acacia Byrd.
Tanfin appeared in The End of the Beginning: All Roads.