K'Tal
K'Tal was a high-ranking councilor of the Klingon High Council in the 24th century. 

In 2367, he oversaw the ascension of Gowron to Klingon chancellor after Chancellor K'mpec was assassinated. ()

K'Tal was also present when Gowron gave the life of Toral to Worf, who refused to kill him. ()

When Captain Picard needed a cloaked ship to get to Romulus in 2368 and Gowron didn't respond to Picard's messages, Picard asked Worf to contact somebody else on the Council, and suggested K'Tal specifically. Neither K'Tal nor Gowron responded, but junior adjutant B'iJik did state that Gowron and the High Council were unable to talk to Picard. ()

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de: K'Tal
Klingons
Klingon government officials