Dimitrios Nikolaidis from the island of Keos (Greece) was the publisher of the newspaper Konstantinoupolis. Before that, he was a columnist of Anatolikos Asteras and in 1865 he took over the publication (initially with Stavros Voutyras) of I.M. Raptarchis’s journal Eptalofos, until 1871. The journal changed to a daily newspaper in 1897, later becoming a broadsheet entitled Konstantinoupolis. He was also the publisher of the newspaper Servet and wrote a number of books. He died in 1912.