The oldest extant guide, Kikunsho is a written copy made in 1681, and the instruction to pronounce as "morinaka" has not been proven to have been written by Kaneyoshi ICHIJO himself.
現存する最古の『諱訓抄』は、天和(日本)元年（1681年）に写された写本であり、「モリナカ」のルビを実際に一条兼良が振ったものか根拠に乏しい。