Complex sentence: The team was part of a larger sports club founded in 1889 as "Turnerbund Jahn Regensburg" which took its name from Friedrich Ludwig Jahn, whose ideas of gymnastics greatly influenced German sport in the 19th century.
Split into simpler sentences: The team was part of a larger sports club founded in 1889 as "Turnerbund Jahn Regensburg". They took their name from Friedrich Ludwig Jahn, whose ideas of gymnastics greatly influenced German sports in the 19th century.