Did Percy Shelley have a genuine premonition of his own death or simply

write about by coincidence? I tried looking and I couldn't find anything. Please help.

Thanks in advance!
I have to write an essay on it and I need an example of why people think it was a premonition and why people think it was by coincidence. I tried looking for internet sites but couldn't find any on either of these. Is there anyway you can help me find some sites that would answer these questions?