Page: 55
[170] In 1999, the Supreme Court set forth the principles governing the interpretation of treaties
(R. v. Marshall, [1999] 3 S.C.R. 456, 177 DLR (4th) 513 at para. 78). They are worthwhile
describing in full:
78. This Court has set out the principles governing treaty interpretation on many
occasions. They include the following.
1. Aboriginal treaties constitute a unique type of agreement and
attract special principles of interpretation: R. v. Sundown, [1999] 1
S.C.R. 393, at para. 24; R. v. Badger, [1996] 1 S.C.R. 771, at
para. 78; R. v. Sioui, [1990] 1 S.C.R. 1025, at p. 1043; Simon v.
The Queen, [1985] 2 S.C.R. 387, at p. 404. See also: J. [Sákéj]
Youngblood Henderson, "Interpreting Sui Generis Treaties"
(1997), 36 Alta. L. Rev. 46; L.I. Rotman, "Defining Parameters:
Aboriginal Rights, Treaty Rights, and the Sparrow Justificatory
Test" (1997), 36 Alta. L. Rev. 149.
2. Treaties should be liberally construed and ambiguities or
doubtful expressions should be resolved in favor of the aboriginal
signatories: Simon, supra, at p. 402; Sioui, supra, at
p. 1035; Badger, supra, at para. 52.
3. The goal of treaty interpretation is to choose from among the
various possible interpretations of common intention the one which
best reconciles the interests of both parties at the time the treaty
was signed: Sioui, supra, at pp. 1068-69.
4. In searching for the common intention of the parties, the
integrity and honour of the Crown is presumed: Badger, supra, at
para. 41.
5. In determining the signatories' respective understanding and
intentions, the court must be sensitive to the unique cultural and
linguistic differences between the parties: Badger, supra, at
paras. 52-54; R. v. Horseman, [1990] 1 S.C.R. 901 at p. 907.
6. The words of the treaty must be given the sense which they
would naturally have held for the parties at the time: Badger,
supra, at paras. 53 et seq.; Nowegijick v.The Queen, [1983] 1
S.C.R. 29, at p. 36.
7. A technical or contractual interpretation of treaty wording
should be avoided: Badger, supra; Horseman, supra; Nowegijick
supra.