prince

There are a lot of Tokugawas , but I think it is this one: "Prince Tokugawa Iesato (徳川 家達?, August 24, 1863 – June 5, 1940) was the first head of the Tokugawa clan after the overthrow of the Tokugawa bakufu, and a figure in Japanese politics during the Meiji, Taishō and early Shōwa period Japan." en.wikipedia.org/wiki/Tokugawa_Iesato Other pictures at commons.wikimedia.org/wiki/Category:Tokugawa_Iesato

Another possibility would be Prince Tokugawa Keikyu, see photograph in the East Oregonian, September 11, 1918, DAILY EVENING EDITION, Image 4 oregonnews.uoregon.edu/lccn/sn88086023/1918-09-11/ed-1/se.... It could be this man IMO. Or it could be Tokugawa Yoshihisa (1884–1922) (according to en.wikipedia.org/wiki/Tokugawa_Yoshinobu-ke), apparently a brother of Keikyu (or the same man?), see photograph in the Rogue River courier, December 03, 1918, DAILY EDITION, Image 1 oregonnews.uoregon.edu/lccn/sn96088180/1918-12-03/ed-1/se.... Both are described as representatives of the Red Cross in Japan. According to www.historyofjapanguide.com/mysterious-japan-017.htm, Prince Keikyu Tokugawa was a son of Yoshinobu (en.wikipedia.org/wiki/Tokugawa_Yoshinobu).

Keikyu and Yoshihisa appear to be the same, since Kikuko, who married Prince Takamatsu (a brother of Emperor Hirohito), is denominated as daughter of Keikyu in www.mocavo.com/The-Japan-Christian-Year-Book-1931/590833/23 and as daughter of Yoshihisa in en.wikipedia.org/wiki/Kikuko,_Princess_Takamatsu.

Prince Edward visited Warwick for about an hour, on Monday 26 July 1920. He arrived at Warwick by train at 3 pm and was greeted by the Mayor, Alderman R. E. Gillam. A band played the National Anthem and the Prince was escorted through the main entrance of the railway station to where returned soldiers were drawn up in files. He passed here and there through the ranks, shook hands with one or two of the men, and chatted for an instant before passing onto another. He then stepped into the waiting car and was driven down Grafton Street to the cheering of the people. The car took him to the Rotunda in Leslie Park where the Prince received a gift of painted views of Warwick. The Prince was then driven back to the railway station. The train moved off to the accompaniment of ringing cheers, with the Prince standing on the platform at the rear of the rail car. (Information taken from The Warwick Daily News, 27 July 1920, p. 5.)

Ok bear with me now, This Queen Mary is HRH Elizabeth IIs grandmother? (sorry colonial ignorance, Australia)