A complete list of the Siridar-Dukes of Caladan follows. With the marriage between Siridar-Duke Paulos XIX Atreides and the Imperial Heir, Princess Regent Irulan III, in 10196, the House of Atreides once again became merged with the Imperial fortunes. The succession in 10208 of Emperor-Duke Leto II, 269th Head of the House of Atreides, maintained the Atreides Imperium until 13724. R.R. SIRIDAR-DUKES OF ATREIDES CALADANIDES AND ARRIKIDES 1. Paulos XVI (8677)8711-8749 25. Pansanias XXII (n) 9458-9541 2. Kallistos III (i) 8749-8799 26. Ansiakes n (s) 9541-9567 3. Basilios 11 (b) 8799-8818 27. Pleistarchos (u) 9567-9569 4. Pantos XVII (s) 8818-8820 28. Konstanunos VII (s) 9569-9584 5. Delos(u) 8820-8825 29. Aristakes III (s) 9584-9652 6. Theseus VHI (n) 8825-8862 30. Philodelphos or Minos V (b) 9652-9675 7. Demctrios XXX (s) 8862-8904 31. Pausanias XX111 (s) 9675-9711 8.