The Mogh (Star Trek) reference article from the English Wikipedia on 24-Apr-2004
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Mogh (Star Trek)

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In the Star Trek universe, Mogh was the father of Worf and grandfather of Alexander. Mogh was head of the House of Mogh. He and his wife died in the battle of Khitomer. He was used as scapegoat for Duras, who betrayed the empire to the Romulans. The house of Mogh was later cleared, but then expelled by Gowron.