Dear Daniel,
Perhaps Mrs. Conrnelia Tauschke, can help on these mares.
Be text is property of SE.com " Ashaal Al Rayyan" by Susanne Bösche.
"
El Thayeba stud did undergo a change within the last decade. Originally, the mares Morawa (Nizam x Momtaza) and Mona II (Mahomed x Mahiba) and her daughter El Thay Maheera (by Nizam) were known as the foundation mares. Today these families are reduced in favour of the Dahman Shahwan line of Kamla II (Ansata Halim Shah x Mona III) and El Thay Bint Mofeedah (by El Thay Ibn Halim Shah).
The Kuhaylan Rodan line of Morawa was represented by El Thay Mansoura (Machmut x Morawa) and her enchanting daughter El Thay Mahfouza (by El Thay Ibn Halim Shah)..."
Best Regards,
Marianella