It gets worse! I just found 2 more convictions in 1843 for a William Holdsworth b. 1819. They're hard to read, but the first looks like 2 months jail for sedition.... riot and the second conviction was 6 months jail for what looks like fraud, a few months later.
There is also a listing for deportation to Australia for a William Holdsworth same birth year in 1849, the year my William's first child was born. The sentence was for 7 years, but since the second child was born in 1851 I guess it could be another William Holdsworth.
Interestingly, my Grandfather b.1902, was called James Holdsworth.