Interestingly some others who should know also got it wrong - most noteable Chiba in an interview. Of course he may have got it from a previous error as he was not on the scene.
According to the Shodokan Honbu profile on Tomiki he only met Kano 2 years before meeting Ueshiba. He started Judo in school age 10 in 1910.
Shoot me - I like historical context.