Texas Tax Code - TAX § 34.22. Evidence of Title to Redeem Real Property

(a) A person asserting ownership of real property sold for taxes is entitled to redeem the property if he had title to the property or he was in possession of the property in person or by tenant either at the time suit to foreclose the tax lien on the property was instituted or at the time the property was sold.  A defect in the chain of title to the property does not defeat an offer to redeem.

(b) A person who establishes title to real property that is superior to the title of one who has previously redeemed the property is entitled to redeem the property during the redemption period by paying the amounts provided by law to the person who previously redeemed the property.