Thanks for all these thoughts/information/personal experiences, etc to my original post. For some reason, my hotmail account isn't registering these replies!
Meles: yes, my g-grandfather's suicide is registered as having happened when he was 'of unsound mind'. I can imagine, certainly in the 20s when my forebear committed suicide, that widespread understanding of mental health issues was pretty poor. My own take is that the Victorian value of 'the stiff upper lip' was still holding sway, and depression (as a psycho/social phenomenon) was something that was frowned upon and given short shrift.
I received a copy of the 1922 newspaper report yesterday and, although the circumstances of my g-grandfather's death are pretty gruesome, there's not that much to really explain why he did it. But looking at the suicide all these years after the event, there are a few facts to take into account: my g-grandfather survived WW1. I haven't been able to find his service records but his wife states (with irony, I think) that he survived WW1 'with no injury'. I wonder though, what psychological affect the war might have had on him. There is some talk of him being depressed about business worries (he is recorded as being a 'dining rooms proprietor' - I guess this means he ran a cafe). Whatever, he got up on a Monday morning, went into the coalshed and cut his throat, apparently almost severing his head. According to his wife, there didn't seem to have been any warning.
(I have more to say, but Rootschat is playing up! It's really difficult to write my post as the message section keeps flicking up and down. I'll try again later!)
Clara X