Hi Debra yes I have read that link, but didn't find the earlier conviction link.
I have now found it on ancestry too. Also found the brother David.
Patrick was married earlier to an Anne (not sure of surname or date of death yet) and they had a son Patrick who I think only lived a few days, he then went on to marry Sarah Hunt and they had two children, she then died giving birth to their 3rd child, all that loss may have tipped him over the edge!! Very sad. Still collating all the info though.