Mohammed bin Thani Mohammed bin Thani Sheikh Mohammed bin Thani (; c. 1788 – 18 December 1878), also known as Mohammed bin Thani bin Mohammed Al Thamir (), was the second emir of the whole Qatari Peninsula, following his predecessor, his father, Sheikh Thani bin Mohammed Al Thamir. He is known for being the father of Sheikh Jassim bin Mohammed Al Thani, the founder of Qatar and who fended off the Ottoman army in the late 19th century. Sheikh Mohammed bin Thani was born in Fuwayrit, Qatar, by his father and predecessor to the throne, Sheikh Thani bin Mohammed Al Thamir, with Sheikh
Collecting practices of the Al-Thani Family prominent buyer on the art market, the Al-Thani family has significantly expanded its modern art collection. The family owns notably: In addition to building collections of works by international artists, the Al-Thani family is committed to developing Arab contemporary art and supporting regional artists. The credit goes in the first place to Sheikh Hassan bin Mohamed bin Ali Al Thani, who began buying Arab art in the mid-1980s while very little attention had been carried out on the region's artistic movements. In 1986, he started collaborating with the artist and art educator Yousef Ahmad. Hassan Al-Thani supported Iraqi artists after