Looks like Monteath Douglas. See:
https://archive.org/details/fairbairnsb ... ew=theater
https://archive.org/details/fairbairnsb ... ew=theater
"Out of an Eastern crown or, the rim charged with three bombs fired, an oak-tree, the stem transfixed by a sword fesseways, pommel and hilt to the dexter, all ppr. (for Monteath)."
The motto is Viresco = I become green / to flourish. I started to search Fairbairn's book for the motto (used by several families) and found Monteath Douglas.
Could even be General Sir Thomas Monteath Douglas KCB ADC whose orders and medals could match the ones featured below the crest. You can use Google search to see his mausoleum where his coat of arms are shown with similar set of medals.
https://en.wikipedia.org/wiki/Thomas_Monteath_Douglas