Geiringer, p. 19 Early biographers found this shocking, perhaps not realising that Johann Jakob had performed in such places himself, and played down this portion of his life. Source: Internet
Geiringer, p. 18 Owing to the family's poverty, at age 13, Brahms had to begin contributing to the family's income by playing the piano in "taverns, restaurants, and other places of amusement." Source: Internet
Geiringer, p. 12 In 1830, he had married Johanna Henrika Christiane Nissen (1789–1865), a seamstress never previously married, who was seventeen years older than he was. Source: Internet
Geiringer, p. 16 Marxsen had studied in Vienna with Ignaz von Seyfried (a pupil of Mozart) and Carl Maria von Bocklet (a close friend of Schubert ). Source: Internet
Geiringer, p. 20 He spent parts of the summers of 1847 and 1848 in the household of a friend of his father's, Adolf Giesemann, in the rural village of Winsen an der Luhe about 25 km southeast of Hamburg. Source: Internet
Geiringer, p. 28 Brahms played some of his own solo piano pieces for Joachim, and soon the two became friends for the rest of their lives. Source: Internet