Friedrich Forberg was a German cellist and teacher of singing. Quite possibly a brother or close relative of Otto Forberg (violist of the Heckmann Quartet, and publisher) and Robert Forberg (publisher, 1833–1880), and someone about whom it should not be difficult to obtain biographical information indirectly thereby. Cellist and teacher of singing. May be a descendant, instead, of Friedrich Karl Forberg (1770–1848), noted classical scholar (see Wikipedia-en). (Or perhaps both families are closely related, ought one knows.)