Hi Experts, For more than 20 years I have researched the Yanagawa family in the books,when I had purchased a Tsuba,made by Yanagawa Naoharu.It's very disturbing,how the various sources differ from one another.Even Markus Sesko with his fine book "Genealogies of Japanese tsuba and toso-kinko Artists" could not satisfy my hopes! Look at the following data with more students than in the various books and the questions arising.If one has new ideas or facts,let us know.Ludolf   Naomasa 直 H06690-t