I've hit a bit of a brick wall in trying to track down this couple from Buckie.

The husband, Walter McGeorge Smith, was born on 25th November 1894 at 4 Gordonsburgh, Buckie to Joseph Smith and Mary Ann Norrie
The wife, Williamina Thomson, was born on 6th October 1896 at 1 Mid Street, Buckie to William Thomson and Elizabeth (Betsy) Smith
I have both of them in the 1901 census as living with their families. In 1911 I'm assuming they'd still be with their families.
They married on 12th December 1919 at 1 Mid Street, Buckie. The only deceased parent was Joseph Smith (d. 1910).
Just twelve days later, Williamina gave birth to a daughter, Mary on 24th December 1919 at 1 Mid Street.
That is the last I have of them. I am trying to find what happened to them afterwards and when they diedI have no clue what happened to them afterwards, and I can't seem to find anything

I have checked ScotlandsPeople for their deaths, I've included & left out Walter's middle name, I've put in the year & left it out yet I still can't find anything.
I'm not too sure if they had any children after Mary, I'll check when I'm next at the Register House. Smith is such a common name, so I can't exactly use the online version as there will be far too many.
I have considered the possibility that they have emigrated but I haven't been able to track down any evidence that supports that.
Williamina lost 4 brothers and sisters (died in infancy/childhood). She had a brother John that died at a Naval Hospital in Kent in 1918 and a sister Elizabeth who died in Inverness in 1978. Both of her parents died in 1 Mid Street and have been buried in Rathven Cemetery next to Buckie.
I would appreciate it greatly if someone could shed some light on this mystery family.