Yᵉbêmeth

And if the man like not to take his brother’s wife, then his brother’s wife shall go up to the gate unto the elders, and say, My husband’s brother refuseth to raise up unto his brother a name in Israel; he will not perform the duty of a husband’s brother unto me.

The first tagged occurrence in Deuteronomy.

And she said, Behold, thy sister-in-law is gone back unto her people, and unto her god: return thou after thy sister-in-law.

The first tagged occurrence in Ruth.