German theologian, 1799-1846, an ancestor of Otto Dietrich zur Linde in Borges story, perhaps based on the German musician of the same name, 1749-1818.
Fishburn and Hughes: "A fictional character in Borges's 'Deutsches Requiem', said to have lived from 1799 to 1846. The name recalls Johann Nicolaus Forkel, the first biographer of J.S. Bach, who lived from 1749 to 1818. Its use in the story’s first footnote introduces the theme of bifurcation." (74)