Mostly a note to myself.. I finally found a document that establishes the breeder of Krush Juhayyim, the foundation stallion of modern Syrian Arabian horsebreeding. A breeding certificate mentions that the sire of a grey ‘Ubayyah mare is “Krush Juhayyim from the marbat of al-Abd al-Muhsin (Sattam al-Hawwas)”. Sattam is the son of Hawwas the son of Mayzar the son of Abd al-Muhsin al-Jarba. Mayzar was the leader of the Syrian Shammar as of 1934. PS — I learned from the Jarba shaykhs that this Krush strain came to them directly from Ibn Rashid of the Shammar of Hail. After the Ottomans quelled the rebellion of the Shammar under Abd al-Karim al-Jarba and hung him over a bridge on the Tigris in Mossul, his mother Amshah took her surviving son Faris and Abd al-Karim’s son Abd al-Muhsin, and stayed with their relative Ibn Rashid to shield them from the Ottomans. Upon their return to Mesopotamia, Ibn Rashid gave the young Abd al-Muhsin one of his Krush mares, which he had gotten from the al-Dawish leaders of Mutayr.