Wallace about him, from his Child-hood kept,
Where e'er he went, whither he walk'd or slept,
A Psalter Book, which he beseech'd the Knight,
Lord Clifford, might be brought into his Sight.
Which done, he caus'd a Priest upon the Place
To hold it open straight before his Face,
On which he look'd, sometimes his Eyes up cast,
Religiously unto his very last.
Then quickly came the Executioner who,
Gave him the fatal, and the Mortal blow.
Thus in Defence, that Hero ends his Days,
Of Scotland's Right, to his immortal Praise...
The psalms were important to William Wallace, let them be to us as well.
"Let the word of Christ dwell in you richly, teaching and admonishing one another in all wisdom, singing psalms and hymns and spiritual songs, with thankfulness in your hearts to God." (Col. 3:16)
The quote above is from the edition edited by William Hamilton of Gilbertfield, published 1722. (http://www.mostly-medieval.com/explore/intro.htm)