 In 1836 – 37 , Otto visited Germany and married the beautiful and talented 17 @-@ year @-@ old , Duchess Amalia ( Amelie ) of Oldenburg ( 21 December 1818 – 20 May 1875 ) . The wedding took place not in Greece , but in Oldenburg , on 22 November 1836 ; the marriage did not produce an heir and the new queen made herself unpopular by interfering in the government . Besides , she remained Lutheran . Otto was unfaithful to his wife , and had a liaison with Jane Digby , a notorious woman his father had previously taken as a lover . 
