| Qasim | 
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|
|
| Reign | 1597 – 19 February 1620 | 
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| Predecessor | Hassan | 
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| Successor | Muhammad | 
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| Born | 13 November 1559 | 
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| Died | 19 February 1620 | 
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| |
 | Al-Qasim ibn Muhammad ibn Ali ibn Muhammad ibn Ali ibn al-Rasheed ibn Ahmed ibn al-Hussein ibn Ali Bani Yahya ibn Muhammad ibn Yusuf ibn Qasim ibn Yusuf ibn Yahya ibn Ahmed ibn Yahya | 
 | 
| Father | Muhammad ibn Ali | 
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| Religion | Zaidiyyah | 
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Al-Mansur al-Qasim (November 13, 1559 – February 19, 1620), with the cognomen al-Kabir (the Great), was an Imam of Yemen, who commenced the struggle to liberate Yemen from the Ottoman occupiers. He was the founder of a Zaidi kingdom that endured, under many vicissitudes, until 1970.