“joab's” in the Douay-Rheims Bible

The word joab's appears 6 times in the Douay-Rheims Bible. The first 5 matching verses are shown below.

2 Kings 14:30 He said to his servants: You know the field of Joab near my field, that hath a crop of barley: go now and set it on fire. So the servants of Absalom set the corn on fire. And Joab’s servants coming with their garments rent, said: The servants of Absalom have set part of the field on fire.
2 Kings 17:25 Now Absalom appointed Amasa in Joab’s stead over the army: and Amasa was the son of a man who was called Jethra, of Jezrael, who went in to Abigail the daughter of Naas, the sister of Sarvia who was the mother of Joab.
2 Kings 18:2 And sent forth a third part of the people under the hand of Joab, and a third part under the hand of Abisai the son of Sarvia Joab’s brother, and a third part under the hand of Ethai, who was of Geth: and the king said to the people: I also will go forth with you.
2 Kings 20:7 So Joab’s men went out with him, and the Cerethi and the Phelethi: and all the valiant men went out of Jerusalem to pursue after Seba the son of Bochri.
2 Kings 20:11 In the mean time some men of Joab’s company stopping at the dead body of Amasa, said: Behold he that would have been in Joab’s stead the companion of David.