shikken

(from the article `Hj Family`) ...collectors (jit) in each province. These appointees were responsible to the Samurai dokoro, or private military staff of the shogun, at Kamakura. ... ...passed into the hands of the Hj family, from which Yoritomo`s wife, Masako, had come. In 1203 Hj Tokimasa, Masako`s father, assumed the position ... ...
Found on http://www.britannica.com/eb/a-z/s/82

Shikken

The 執権 was the regent for the shogun in the Kamakura shogunate in Japan. The post was monopolized by the Hōjō clan, and this system only existed once in Japanese history, between 1203 and 1333. Note this is totally different than an Imperial Regent or Kampaku (also Sessho). Hōjō Tokimasa, who was the father-in-law of the first shogun Minam
Found on http://en.wikipedia.org/wiki/Shikken

Shikken

Regency; term given for the Hojo
Found on http://www.samurai-archives.com/vocab.html
No exact match found