A more thorough explanation:

Definition: Ego, talis (ee-goh, tay-lis) is a Latin phrase that means "I, such a one." It was commonly used in old deeds to describe the parties involved.

Example: "This land is sold by John Smith to Jane Doe, ego, talis."

This example shows how the phrase was used to identify the parties involved in a transaction. John Smith is the seller and Jane Doe is the buyer, and they are both identified as "such a one" in the deed.