"The term "Negro"... here denotes only people of primarily African descent. ...[T]hat would include Alexander Pushkin and... Alexandre Dumas père (who traveled extensively through Russia in 1858 and 1859 and left a detailed account). ...Pushkin's maternal great-grandfather and Dumas's paternal grandmother were Negroes; the two writers were not. Nevertheless, attitudes that Pushkin and other Russians have expressed concerning his African heritage do figure prominently in the present work."
January 1, 1970
https://en.wikiquote.org/wiki/History_of_Free_African_Diaspora