Good new for you Jonjam
I have the marriage, confirmed by birth of their son Charles.
Marriage is the one in Kendal.

Charles was born on 5.11.1899.
I have the document from ScotlandsPeople for you.
When you can, send me a personal message with your email address and I'll send you the document. Don't post your email address here.
Off to look for a birth, not in Dumfries, to try to get you a timeframe for when the came to Scotlan.
Jamjar