was the second son of Mōri Motonari

Mori Motonari

was a prominent daimyō in the west Chūgoku region of Japan during the Sengoku period of the 16th century.-Early years:Mōri Motonari was born under the name Shojumaru in a small domain of Aki province in 1497. He is said to have been born at Suzuo Castle, his mother's homeland...

, and featured prominently in all the wars of the Mōri clan

Mori clan

The Mōri clan was a family of daimyō, descended from Ōe no Hiromoto and established themselves in Aki Province. Their name was derived from a shōen in Mōri, Aikō District, Sagami Province. The generation of Hiromoto began to name themselves Mōri.After the Jōkyū War, Mōri was appointed to the jitō...

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When Motoharu was young he was adopted into the Kikkawa clan by Kikkawa Okitsune. He then became head of the family around 1550. Motoharu fought in many battles alongside his brother, Kobayakawa Takakage

Kobayakawa Takakage

was a samurai retainer of Toyotomi Hideyoshi during Japan's Sengoku period, and the son of Mōri Motonari. Adopted by the head of the Kobayakawa clan, Takakage took his name, and succeeded his adoptive father to become head of the Kobayakawa clan following his death in 1545.As head of the Kobayakawa...

, including the 1555 battle of Miyajima

Battle of Miyajima

The 1555 ' was the only battle to be fought on the sacred island of Miyajima; the entire island is considered to be a Shinto shrine, and no birth or death is allowed on the island. Extensive purification rituals took place after the battle, to cleanse the shrine and the island of the pollution of...

 and the 1570 battle of Nunobeyama. In 1566, he claimed Izumo province

Izumo Province

was an old province of Japan which today consists of the eastern part of Shimane Prefecture. It was sometimes called . The province is in the Chūgoku Region.- History :It was one of the regions of ancient Japan where major political powers arose...

 as his fief, after defeating its lords, the Amago clan

Amago clan

The , descended from the Emperor Uda by the Sasaki clan .Sasaki Takahisa in the 14th century, having lost his parents at the age of three years, he was brought up by a nun...

, in a number of battles.

Motoharu also fought in many battles against the Oda

Oda clan

The was a family of Japanese daimyo who were to become an important political force in the unification of Japan in the mid-16th century. Though they had the climax of their fame under Oda Nobunaga and fell from the spotlight soon after, several branches of the family would continue on as daimyo...

 such as the Siege of Takamatsu

Siege of Takamatsu

In the 1582 siege of Takamatsu, Toyotomi Hideyoshi laid siege to Takamatsu Castle, which was controlled by the Mōri clan. He diverted a nearby river with dikes to surround and flood the castle, leading to a relatively speedy surrender. He also constructed towers on barges from which his...

. After Oda Nobunaga

Oda Nobunaga

was the initiator of the unification of Japan under the shogunate in the late 16th century, which ruled Japan until the Meiji Restoration in 1868. He was also a major daimyo during the Sengoku period of Japanese history. His opus was continued, completed and finalized by his successors Toyotomi...

's death in 1582, Motoharu fought under Toyotomi Hideyoshi

Toyotomi Hideyoshi

was a daimyo warrior, general and politician of the Sengoku period. He unified the political factions of Japan. He succeeded his former liege lord, Oda Nobunaga, and brought an end to the Sengoku period. The period of his rule is often called the Momoyama period, named after Hideyoshi's castle...

. After his death in 1586, Motoharu was succeeded as head of the Kikkawa clan by one of his sons, Hiroie

Kikkawa Hiroie

' was a Japanese daimyo of the Azuchi-Momoyama period through early Edo period.Hiroie's father was Kikkawa Motoharu and his mother was a daughter of Kumagai Nobunao. He initially was named Tsunenobu and made his debut on the battle field on 1570 against Amago Katsuhisa with his father...

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