From the Hans Christian Andersen biography "The Life of Hans Christian Andersen. Day By Day", written by DPhil Johan de Mylius:
1842The Half Sister
Admiral Wulff dies in a carriage on the way home from the theatre. HCA writes a commemorative poem for Wulff, which is included by his son, Christian, in an edition of the father's Poetic Works (Poetiske Arbejder), published after his death 1844.
8 February 1842
Receivers a letter from his half-sister, Karen. Sends her a letter on the 11th and receives a visit on the 12th from Kaufman, the man she with whom she lives. Gives him 4 rdl.
Sees (this is not quite clear in the diary) the premiere of Bournonville's ballet Napoli and visits Bournonville at home afterwards. Writes a poem to Bournonville on the following day and has it printed in the newspaper "Fædrelandet" (The Fatherland). Sees Napoli (again?).
Receives a thank you poem from Bournonville . He and HCA agree to address each other informally and have a toast to celebrate this decision. On the same day, HCA spends time with Clara Wieck, the pianist, who asks HCA on behalf of her husband (Robert Schumann) whether he may dedicate his compositions to HCA's poems.