Dear friends:
I note that Radzinsky mentions the surname of 'Filippov' in his record of the survival of the Heir --an identification which appears to be tacitly supported by HH Valerian Obelensky. One wonders if this might not have been a misspelling of 'Filatov'. That is not an impossible explanation for the identity of the Radzinsky 'Heir' and the man known as Vassili Filatov --the pseudoym adopted by the Heir after the events of 1918. I think we all must wait for more information coming out of Russia on the lineal descendants of the last Emperor and Empress --moreover it appears there are also lineal descendants in the west.
Strom.