1) Japanese poet 
He is said to have built his hermitage in a cave at Ausaka no Seki. Supposedly, on seeing the traffic on the road to the capital, he composed the following 和歌 For this he became known as 関の明神. For three years while Minamoto no Hiromasa travelled to the capital regularly, Semimaru is said to have tutored him on the secret 琵琶 techniq...