Aikido was founded early in the 20th century by Morihei Ueshiba, or as he is know within Aikido: O’Sensei, (an honorific term for a great teacher.) Ueshiba’s previous martial arts training started from the traditional study of Kenjutsu and Kendo, and in the military during the 1900’s, during which he studied with the Masakatsu Nakai Dojo learning Yagyu-ryu Jujitsu. His devotion further lead him to study Kodokan Judo with Kiyoichi Takagi and later on Daito-ryu Jujitsu, with the legendary Sokaku Takeda.
It is difficult to speak with certainty about the very early history of Aikido. Tradition suggests that it is possible to trace back the origins of Aikido to Prince Teijun, the sixth son of the Japanese Emperor Seiwa (850-880 A.D.)