References:

• 1991 Book “The Arabian Horse Families of Poland 1790-1987” by Britta Fahlgren
  (Original Arabians W/3 & W/10) Bournu 1821 was a stallion bred by Weil (Stud - Germany)
  Sire: Bournu OA 1810. Dam: Kabron I OA 1813
  He was sire at Weil of Musa II 1830 m (x Murana II 1822) and of Kaaba II 1832 m gr (x Banka I 1823)
• Al Khamsa: In addition to progeny stated above, Hazam IV 1832 m (x Sady III 1821) is listed as sired by Bournu 1821 in lieu of Bournu OA 1810 (aka Goumousch Bournu)