Samuel
Ruth 4:10BSB·traditional attribution

Moreover, I have acquired Ruth the Moabitess, Mahlon’s widow, as my wife, to raise up the name of the deceased through his inheritance, so that his name will not disappear from among his brothers or from the gate of his home. You are witnesses today.”

Matthew Henry Presbyterian @wholebiblehenry

Boaz now sees his way clear, and therefore delays not to perform his promise made to Ruth that he would do the kinsman's part, but in the gate of the city, before the elders and all the people, publishes a marriage-contract between himself and Ruth the Moabitess, and therewith the purchase of all the estate that belonged to the family of Elimelech.

Commenting on Ruth 4:9-12

John Gill Reformed Baptist @doctorgill

Moreover, Ruth the Moabitess, the wife of Mahlon, have I purchased to be my wife,.... Which was the condition on which the purchase of the land was, that whoever bought that should take her for his wife; nor did Boaz do evil in marrying her, though a Moabitess.

Jamieson-Fausset-Brown Reformed @jfbcommentary

HE MARRIES RUTH. (Rut 4:9-12) Boaz said unto the elders, Ye are witnesses this day, that I have bought all that was . . . Chilion's and Mahlon's, of the hand of Naomi--Although the widow of Chilion was still living, no regard was paid to her in the disposal of her husband's property.

Commenting on Ruth 4:9-12