non-Han tribes in the east and north of ancient China; barbarians

Dickens (name); Charles Dickens (1812-1870), great English novelist

Eugène Edine Pottier (1816-1887), French revolutionary socialist and poet

Theodor (name)

Di Renjie (607-700), Tang dynasty politician, prime minister under Wu Zetian, subsequently hero of legends; master sleuth Judge Dee, aka Chinese Sherlock Holmes, in novel Three murder cases solved by Judge Dee 狄公案 translated by Dutch sinologist R.H. van Gulik 高罗佩

Karl Berngardovich Radek (1885-1939), Bolshevik and Comintern leader, first president of Moscow Sun Yat-sen University, died in prison during Stalin's purges

P.A.M. Dirac (1902-1984), British physicist

Dee Gong An (or Judge Dee's) Cases, 18th century fantasy featuring Tang dynasty politician Di Renjie 狄仁杰 as master sleuth, translated by R.H. van Gulik as Three Murder Cases Solved by Judge Dee