Hi Peter,
Just when I was beginning to like you, you had to mention the Rugby. Oh well we win everything else I suppose.

A very big surprise to me was that John Ewing of Warwick Qld didn't follow the generational family footsteps of weavers. Well, maybe he did very early and very young perhaps. Maybe the jobs were starting to fall or drop right off because of the cotton shortage caused by American Civil war.
On his Marriage certificate his father's [also John] listed profession was weaver, but John of Warwick Qld was 'platelayer'. Big surprise that he already was one when he came here and the reason he was selected obviously. Poor Mary signed with an 'x' as did Margaret Sproul in her marriage certificate.!
Sounds like John when he came here carried on some of the unrest as he was a strong advocate for the 8hr work days as cited by his daughter Jane in her story on Trove. I found where John Ewing and others formed a 'Union' of sorts to take their fight to the Parliament at some stage. I also found where he was collecting monies from workers for the fight. Today it's called 'Union fees'.
Can you tell me where you got the information from, where John Ewing assaulted poor Margaret Sproul? Is there a Scottish digitised newspaper like the Australian 'Trove'? If there is I'm dying to delve into it because I'm trying to see which John Ewing has run into some trouble here. John had a son born 1861 in Paisley and wouldn't you know it he called him John as well and that's the problem. He has totally dropped off the face of the Earth. He landed here with them and the only trace of him we have found is on John of Warwick's DC where he has died. So he was alive between 1861 and 1907 and that's all we can find. No marriage, no death or burial.
There are a few mentions of a John Ewing in Qld Police Gazettes but just the name. No age, no date of birth just the name. Dilemma, which one is he? All the mentions have occurred in Brisbane. John of Warwick was essentially working all the rail lines on the South and Western Railway which is quite a distance from Brisbane for those days of horse and buggy, Cobb & Co and the completed lines.
I'm essentially trying to rule one or the other out or in, and I think like most a leopard won't change it's spots, so if I can find anything out about John Ewing's past, who brought his family here, before he came it may very well seal the case. He was born 1835 and arrived here in 1866. So I guess maybe the years 1850-1865.
Unless someone out there knows where infant John Ewing went or what happened to him, it's a total dead end.
Cheers.