Theseus Atreides

Theseus Atreides (b. c. 81 BG) was the second son of Demetrios Atreides aka Baron Tantalos.

He was ennobled in 43 BG as Baron Pelops during the wars of expansion conducted by Henoor I.

Discrepancy
In Legends of Dune the ancestor of House Atreides and rival of Abulurd Harkonnen/XD who fought in the Battle of Corrin/XD is named Vorian instead of Demetrios.Vorian has only two sons, the twins Estes and Kagin instead of three sons names Pausanias, Theseus and Konstantinos.