A query on the stallion El Sbaa

I have previously written twice and in some detail about the desert-bred stallion El Sbaa imported to France in the 1920s (here and here). It turns out that the strain of the horse is Kuhaylan J’aitni (that’s from his file at Pompadour) and that he was purchased by French Inspector Rieu de Madron from Ahmad Ibish’s stables in Alexandria (that’s from de Madron’s book). The wiki website Allbreedpedigree.com has his dam as “El Ghermith A Kuhaylah Juatany” and his sire as a “Maneghi Sbyeli”. Does anyone know where this specific information comes from? do we know his breeder? Also Teymur made the interesting suggestion that he might be the El Sabaa sire of Hamdan Stables’ El Gadaa, who appears in Hamdan’s studbook.