Tahnoun was born in 1857[1] and was the second eldest son of Zayed bin Khalifa.
[2] Tahnoun's mother was the daughter of Saeed bin Tahnun Al Nahyan.
[3] Tahnoun succeeded his father Zayed bin Khalifa in May 1909 when his elder brother, Khalifa, refused to replace his father.
[2] Tahnoun died in October 1912 and was succeeded by another brother, Hamdan.
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