Rikyu had seven favourite chawan made by Chojiro, they are called Rikyu shichi-shu as a set:
The name means "big black." The name can also be read "Daik Koko" which is the name of the god of prosperity. Popular among merchant. Takeno Jo-o lived in Daikoku-an.
Toyobo was a friend of Rikyu that lived in Shinnyo-do. Rikyu gave him the bowl, and named it after him.
The name means fast ship. It is said that Rikyu needed the bowl in Kyoto and had it brought to him by the means of a fast river ship from his home in Sakai.
This bowl was left behind at Chojiro's kiln. When Rikyu discovered it he said they must all be blind monks. It received the name Kengyo, which is the highest title a blind monk may receive.
The name means "tree guardian." There is a tradition to leave one persimon on a tree as a guardian that will ensure a good crop next year. This tea bowl was left when Rikyu invited hid Daimyo friends to chose one bowl each, and so it became known as the Kimamori.
Rinzai or Linchi was the Chan master of Tang China whose lineage was brought to Japan by Yosai.