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Books about Yoriyasu:
YORIYASU MASUDA by Yoriyasu Masuda (1999)
Arima Yoriyasu nikki (Japanese Edition) by Yoriyasu Arima (1997)
Arima Yoriyasu kankei bunsho mokuroku: (tsuketari) Adachi Kenzo kankei bunsho mokuroku (Kensei shiryo mokuroku... by Kokuritsu Kokkai Toshokan (Japan) (1989)
Wiki information Yoriyasu:
Indō Yoriyasu was a Japanese samurai of the Sengoku period through early Edo period, who served as a retainer of the Sagara clan.
Count Yoriyasu Arima was a Japanese politician before and during World War II. His wife was the daughter of Prince Takeda Tsunehisa.