http://www.russkiivopros.com/?pag=one&id=30&kat=5&csl=11

Shamil of Gimry: The third Imam In September 1834, soon after Imam Gamzat-bek of Dagestan was killed as the victim of a blood feud, the congress of ulama (a body of the highest Muslim clerics) selected another Avar as the third imam of Dagestan. The man they chose was Shamil (1797-1871), the son of Mahomed from the highland aul of Gimry. Shamil came to symbolise an entire era of the 19th century anti-colonial wars in the Caucasian highlands. The third imam of Dagestan, and, five years later, the first imam of Chechnya, was blessed with an excellent physique – he was tall, athletic, extremely strong, and able-bodied. He received his education from Dagestan’s best theologists and Arabic teachers. According to Moshe Gammer, he was a “born leader, commander, diplomat, and politician. He repeatedly outmanoeuvred the Russians in battle, intrigues, and negotiations. Contrary to Russian propaganda, he was far from extremism and blind fanaticism.”1

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https://www.academia.edu/218820/caucasia_sheikh_mansur?email_work_c...

After his surrender in 1859, Alexander II treated Shamil as a hero and allocated fundst o keep him under house arrest—not in prison—in Russia, with dignity and an appropriate standard of living.

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Said Shamil, a grandson of Imam Shamil, became one of the founders of the Mountainous Republic of the Northern Caucasus, which survived between 1917 and 1920 and later, in 1924, he established the "Committee of Independence of the Caucasus" in Germany.

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Imam Shamil (Avar: Шейх Шамил; Turkish: Şeyh Şamil; Russian: Имам Шамиль; Arabic: الشيخ شامل‎‎) (pronounced "Shaamil") also spelled Shamyl, Schamil, Schamyl or Shameel (26 June 1797 – 4 February 1871) was an Avar political and religious leader of the Muslim tribes of the Northern Caucasus. He was a leader of anti-Russian resistance in the Caucasian War and was the third Imam of the Caucasian Imamate (1840–1859).

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https://en.wikipedia.org/wiki/Imam_Shamil

https://www.wikiwand.com/en/Shamil,_3rd_Imam_of_Dagestan
Imam Shamil (English: also spelled Shamyl, Schamil, Schamyl or Shameel; Avar: Шейх Шамил; Turkish: Şeyh Şamil; Russian: Имам Шамиль; Arabic: الشيخ شامل‎) (pronounced "Shaamil") (26 June 1797 – 4 February 1871) was the political, military, and spiritual leader of Caucasian resistance to Imperial Russia in the 1800s,[1] as well as the third Imam of the Caucasian Imamate (1840–1859) and a Shaykh of the Naqshbandi Sufi Tariqa.[2]

Family and early life Imam Shamil was born in 1797, to an Avar Muslim family of Kumyk descent,[3][4][5] in the small village (aul) of Gimry, which is in present-day Dagestan, Russia. He was originally named Ali, but following local tradition, his name was changed when he became ill. His father, Dengau, was a landlord, and this position allowed Shamil and his close friend Ghazi Mollah to study many subjects including Arabic and logic.

Shamil was born at a time when the Russian Empire was expanding into the territories of the Ottoman Empire and Persia (see Russo-Persian War (1804-1813) and Russo-Turkish War (1806–1812)). Many Caucasian nations united in resistance to Russian imperial aspirations in what became known as the Caucasian War. Some of the earlier leaders of Caucasian resistance were Sheikh Mansur and Ghazi Mollah. Shamil was actually childhood friends with the Mollah, and would become his disciple and counsellor.

Shamil had multiple wives including one of Russian and Armenian heritage named Anna Ivanovna Ulykhanova (1828-1877).[6][7] She converted to Islam as a teenager and adopted the name "Shuanet," remaining loyal to Shamil even after his capture and exile to Russia.[6] After Shamil's death in 1871, she moved to the Ottoman Empire where she was assigned a pension from the sultan.[6]

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Various fates awaited other members of his family. His son Jamaladin, who had been educated in the style of a young Russian nobleman
while being held hostage by the tsar, had already been returned to Shamil’s care in 1855 in exchange for the release of the two princesses whom he had abducted in a raid on eastern Georgia the previous year. Jamaladin died in the mountains soon after his return, unable to resign himself to his alienation from the Russian world he had known as a child. Another son, Magomet-Shefi, became a bureaucrat in the Russian imperial administration. A third son, Gazi-Mehmet, turned to the sultan and served as an Ottoman officer in the Russo-Turkish War of 1877–78. Of all his immediate descendants, only Said Shamil, one of the imam’s grandsons, continued the struggle in the mountains, fighting for Dagestani independence during the Russian civil war.

ref : page 91 of Ghost of Freedom - A History of the Caucasus by Charles King and https://www.academia.edu/3345540/Imam_Shamil_1797_1871_ article by Rebecca Ruth Gould