He was not famous by modern day, rock star standards, but he had a secure position and his family name had a good reputation. Families were like clans back then and marrying into one guaranteed all kind of advantages.
That said, the bitch is responsible for the disappearance of a big chunk of his works. When he died, his compositions were split among her and his children. Two of his children, Carl Philipp Emanuel and Johann Christian i believe took good care of this inheritance and that's why it has been preserved until today, where as her and another one of his children (probably Wilhelm Friedemann) sold his works for a quick cash crab, which resulted in a lot of them becoming dispersed and hard to track down, and many of them are probably lost for good now.
Of course, because we now live in the age of cucks, some idiot came out with the theory she was the actual author of Bach's greatest works and everybody believed it because of muh oppression of women, but the idea was so ludicrous even leftists had to denounce it:
https://www.theguardian.com/music/m...e-cannot-take-credit-for-his-cello-masterwork
I hate this culture so much.
On a side note, i just discovered this little program people are using to represent the music "visually", which can be helpful if you don't know how to listen to polyphony or harmony in general: