1. By analogy to the rule that an action to recover land can be defeated by a prescriptive title acquired by seven-years possession under color of title, the period of limitation applicable to an equitable suit for cancellation of a deed is seven years from the date of its execution.
Harris
v.
Neuman,
179
Ga.
879, 883 (
On an equitable petition seeking merely a cancellation of a deed, although “equity follows the analogy of the law” in allowing the seven year period of limitation, this time is permitted only if “there are no special circumstances demanding an earlier application.”
Pierce
v.
Middle Georgia Land &c. Co.,
supra;
McDonald
v.
Sims,
3
Ga.
383. Where such circumstances exist, calling for an interposition of the equitable doctrine of laches (Code, § 3-712;
Grant
v.
Grant,
192
Ga.
153, 165,
2. The rule of limitation as set forth does not apply if the defendant, or those under whom he claims, have been guilty of a fraud by which the plaintiff shall have been debarred or deterred from his action. In such a case the period of limitation shall run only from the time of the discovery of the fraud. Code, § 3-807.
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Equity applies a similar rule as to laches.
Stocks
v.
Leonard,
8
Ga.
511
(2), 515; Croom,
v.
Cone,
13
Ga. 21, 23; Waters
v.
Waters,
124
Ga.
349 (2) (
3. Although it is the statutory rule that “there may be no adverse possession against a cotenant until actual ouster, or exclusive possession after demand, or express notice of adverse possession, in any of which events the cotenant may sue at law for his possession” (Code, § 85-1005), this rule has no application where the alleged cotenant in possession never expressly or impliedly recognized such a relation, but claimed title and held possession under a deed made to him as the sole grantee. See, as to actual ouster even by a co-tenant, where the cotenant acts as the sole owner,
Bowman
v.
Owens,
133
Ga.
49 (2), 52 (
4. This suit was brought in 1941, by an heir at law of a grandfather, to cancel a deed on account of his alleged mental incapacity as grantor, and alleged concealment by the grantee of its execution. The deed, reciting a valuable consideration but alleged to be voluntary, was executed in 1927 by the grandfather to the father of the defendant, the grantee being the other heir at law, who recorded the deed in 1927, and held under it after the death of the grantor in 1927 until his own death in 1941, after which the land was held by the defendant as heir at law of her father. Applying the 'fore
*333
going rules of law to the alleged facts of this case, even assuming that the statement in
Lawson
v.
Prosser,
146
Ga.
421 (2) (
