LONDON — He may just be a footnote to history, but Dr. Isachar Zacharie is having a posthumous mini-moment, thanks to the Hollywood-sparked surge of interest in the presidency of Abraham Lincoln.

Zacharie was buried in London’s famed Highgate Cemetery in 1900, but he is only being added to the cemetery guide Friday, joining such notables as communist philosopher Karl Marx, novelist George Eliot and punk pioneer Malcolm McLaren as a likely draw for visitors to the north London landmark.

Zacharie’s claim to fame? He was Lincoln’s foot doctor. And a good one at that, if the president’s signed endorsement can be taken at face value....