Berthold Lasker (31 December 1860 - 19 October 1928) was a German chess master.Born Jonathan Berthold Lasker, he was married to the poet and playwright Else Lasker-Schüler and was an elder brother of Emanuel Lasker.He spent most of his life in Berlin, where he played in local tournaments. In 1881 he shared 1st with Siegbert Tarrasch, and took 2nd, behind Curt von Bardeleben, there. In 1883, he tied for 1st-4th and took 4th (playoff) - Hermann von Gottschall won.