Ref: So, beginning with John Stevenson (father of Margaret Stevenson, b. 1898): he was named on Margaret’s birth registration as a mason, residing at 17 Constitution St, Inverurie. Fortunately for us, he was still at that address in the 1901 census.
From the above John Stevenson age 47 appears in the Inverurie 1911 Census so that could be him even although I haven't gone into this matter in more detail.
Hope this helps, nw_whiskers