“The sons of Kenaz were Othniel and Seraiah. The sons of Othniel were Hathath and Meonothai. Meonothai became the father of Ophrah. Seraiah became the father of Joab, the father of Geharashim, so-called because they were artisans.”
The name Kenaz appears 11 times in biblical literature. There appears to be 2 people with that name, one was a son of Esau in Genesis, chapter 36. The other was the younger brother of Caleb. However, there was a 3rd who was the grandson of Caleb. This Kenaz played a role in Judges, chapter 3, and Joshua, chapter 15, as did his son Othniel. Othniel was the 1st judge of Israel after the death of Joshua so that he is a very important person, as the nephew of Caleb and a judge. However, his sons Hathath and Meonothai are only mentioned here. Ophrah is mentioned 9 times in the biblical literature, about 3 different people, but most of them refer to a particular place in Judges. There 11 different people with the name of Seraiah. Joab is another popular name with 128 occurrences. Obviously Joab, the nephew of David was the most important of the 3 people with this name. However, this Joab is the father of the artisans, the Geharashim that is only mentioned here.