I did but prompt the age to quit their clogs
By the known rules of ancient liberty,
When straight a barbarous noise environs me
Of owls and cuckoos, asses, apes and dogs:
The  age  here refers to the popularly held ideology of the time. 
 A clog is a heavy block or piece of wood attached (like a ball and chain) to the leg or neck of a man or beast, to impede motion or prevent escape. From this meaning, the word came to mean an object that obstructs the motion or flow of something, like a  clogged  sink.
Sonnet 12: I did but prompt the age to quit their clogs