This is from 1333. An oath from the son of a jito (land steward, a warrior in charge of estate management, tax collection and forwarding, and responsible for military service to a lord) to Ashikaga Takauji. Takauji was at that time, an up and coming warrior who would become Shogun in 1338 and establish a dynasty that lasted (but was not effective after 1467) until 1574.

Not many of these exist as the Japanese version of vassalage seems generally, to have been more flexible, less formal and changeable than in Europe.

I am Iehira, seventh son of Nakano Goro, religious name, Teishin. My father holds the office of jito on a part of the Yuyama estate, Shinano Province. As for me, I proved my greatest loyalty to your lordship on the eighth day of the fifth lunar month, and I am available to do the same at all of the battles in the future, by obeying you and acting always with loyalty to you. With this document, I present myself to you with all of my respect.

(signature on back of document) Year 3 of Genko, fifth moon, fourteenth day Fujiwara Iehira Counter-signed and approved: Ashikaga Takauji (seal)