Tuhia he haere tonu mo tenei irava - Ko Yadegar Mokhammad (, Yädkär, Yädegär, ) (kua mate i te 1565) ko te khan whakamutunga o te Kazan Khanate, i noho i te tuunga mai i te Maehe-Oketopa 1552. Ko ia te tama a Astrakhan khan Qasim II. I waenga i te 1542 me te 1550 i mahi ia ki te Tsardom o Russia. I te tau 1550, i uru ia ki te whakaeke ki Kazan ka uru atu ki nga Nogais. Whai muri i te whiunga o te Khanate o Kazan e nga ope a Ivan the Terrible i te 1550, i te 1551 ka whakaingoatia e te "rōpū rangimarie" i Kazan te khan pro-Russian Shah Ali. I te tau 1552 ka riro anō te mana i te rōpū "patriotic" anti-Russian. I rere a Shah Ali a i tonoa a Yadegar e Qol Sharif me Chapqin bek Otich uli (Çapqın bäk Otıç ulı, ) ki te torona o te Kazan Khanate. I muri mai, i arahi ia i te pakanga ki te whakaekenga o Ruhia (tirohia te Siege o Kazan
Ko te tikanga o te ture. I mauheretia ia i te Oketopa 1552 i te wa i riro ai a Kazan i nga hoia a Ruhia. I te tau 1553 ka huri ia ki te Karaitiana, i whakawhiwhia ki te ingoa "Simeon Kasayevich" ka noho ki Moscow hei rangatira Ruhia.