In this Japanese name, the family name is Akechi.
Akechi Mitsutsuna (明智 光綱 , September 22, 1497 - September 12, 1535) was a senior retainer under the Toki clan throughout the latter Sengoku period of feudal Japan. He was the father of Akechi Mitsuhide.
The original article can be found at Akechi Mitsutsuna and the edit history here.