1571: The Term 'Komosō shakuhachi' appears
in Top-ranking Imperial Court Minister
Yamashina Tokitsugu's Diary "Tokitsugu's Chronicle"
言継卿記 - TOKITSUGU KYōKI
"The Tokitsugu Chronicle"
Yamashina Tokitsugu, 1507-1579, was a very high ranking Imperial court official who during the period 1527 to 1576 authored a very comprehensive chronicle that covered subjects such as both governmental, social and cultural matters, some parts of which have however since been lost over time.
One specific part of the text stands out here, in an entry for the 25th day in the 7th month of 1571, namely:
Literally, "Next, rise/stand, sell(ing), 'Komosō', shakuhachi."
The meaning and significance of that short sentence should be studied in more detail in relation to the broader context of this entry in Yamashina Tokitsugu's chronicle.
Reprinted by Hosaka Hiro'oki in his important 1994 article on komosō and early komusō history, substantiated by surviving written and pictorial sources.
Source: Hosaka, 1994, page 188.