In 1652, Tadatoshi sponsored the publication of the "Nihon Ōdai Ichiran" in Kyoto. This book was brought from Japan to Europe by Isaac Titsingh in 1796, who translated the text from Japanese and Chinese; and his work was then supplemented for posthumous publication by Julius Klaproth in 1834. In supporting this work, Tadakatsu's motivations appear to spread across a range anticipated consequences; and it becomes likely that his several intentions in seeing that this specific work fell into the hands of an empathetic Western translator were similarly multi-faceted.