, also known simply as Rikyū, is considered the historical figure with the most profound influence on chanoyu, the Japanese "Way of Tea", particularly the tradition of wabi-cha. He was also the first to emphasize several key aspects of the ceremony, including rustic simplicity, directness of approach and honesty of self. Originating from the Sengoku period and the Azuchi–Momoyama period, these aspects of the tea ceremony persist. Rikyū is known by many names; for consistency, he will be referred to as Rikyū in this article. There are three iemoto (sōke), or 'head houses' of the Japanese Way of Tea, that are directly descended from Rikyū: the Omotesenke, Urasenke, and Mushakōjisenke, all three of which are dedicated to passing forward the teachings of their mutual family founder, Rikyū. They are collectively called . Early life Rikyū was born in Sakai in present-day Osaka Prefecture. His father was a warehouse owner named , who later in life also used the family name Sen, and his mother was . His childhood name was . Another major event of Hideyoshi's that Rikyū played a central role in was the Grand Kitano Tea Ceremony, held by Hideyoshi at the Kitano Tenman-gū in 1587. It was during his later years that Rikyū began to use very tiny, rustic tea rooms referred as ('grass hermitage'), such as the two-tatami mat tea room named Tai-an, which can be seen today at Myōki-an temple in Yamazaki, a suburb of Kyoto, and which is credited to his design. This tea room has been designated as a National Treasure. He also developed many implements for tea ceremony, including flower containers, teascoops, and lid rests made of bamboo, and also used everyday objects for tea ceremony, often in novel ways. Raku teabowls were originated through his collaboration with a tile-maker named Raku Chōjirō. Rikyū had a preference for simple, rustic items made in Japan, rather than the expensive Chinese-made items that were fashionable at the time. Though not the inventor of the philosophy of wabi-sabi, which finds beauty in the very simple, Rikyū is among those most responsible for popularizing it, developing it, and incorporating it into tea ceremony. He created a new form of tea ceremony using very simple instruments and surroundings. This and his other beliefs and teachings came to be known as (the grass-thatched hermitage style of ), or more generally, . This line of that his descendants and