it can be inferred that William Lyon Mackenzie

1)was a famous writer
2)was a member of the Family Compact
3)oppose the oligarchies
4)supported the British
5)believed in peaceful assembly

I put 1

3 answers

What source are you using for your inference?
William Lyon Mackenzie 1837 in a published handbill
I haven't read it. Sorry, but I can't help you.

I suspect, though, that you're wrong.