Johannes Hans Bach

The Bach family was of importance in the history of music for nearly two hundred years, with over 50 known musicians and several notable composers, the best-known of whom was Johann Sebastian Bach (1685–1750). A family genealogy was drawn up by Johann Sebastian Bach himself in 1735, his 50th year, and completed by his son Carl Philipp Emanuel.

The Bach family never left Thuringia until the sons of Sebastian went into a more modern world. Through all the misery of the peasantry at the period of the Thirty Years' War this clan maintained its position and produced musicians who, however local their fame, were among the greatest in Europe. So numerous and so eminent were they that in Erfurt musicians were known as "Bachs", even when there were no longer any members of the family in the town. Sebastian Bach thus inherited the artistic tradition of a united family whose circumstances had deprived them of the distractions of the century of musical fermentation which in the rest of Europe had destroyed polyphonic music.

Four branches of the Bach family were known at the beginning of the 16th century, and a Hans Bach of Wechmar is documented to have been alive in 1561, a village between Gotha and Arnstadt in Thuringia, who is believed to be the father of Veit Bach.

Johann Ambrosius' uncle, Heinrich of Arnstadt, had two sons: Johann Michael and Johann Christoph, who are among the greatest of J. S. Bach's forerunners, Johann Christoph being once supposed to be the author of the motet, Ich lasse dich nicht (I will not leave you), formerly ascribed to Sebastian Bach and now confirmed to be his (BWV 159a). Another descendant of Veit Bach, Johann Ludwig, was admired more than any other ancestor by Sebastian, who copied twelve of his church cantatas and sometimes added work of his own to them.

...
Wikipedia