1 Chronicles 4:21-23

21The sons of Shelah son of Judah: Er the father of Lekah, Laadah the father of Mareshah and the clans of the linen workers at Beth Ashbea, 22Jokim, the men of Kozeba, and Joash and Saraph, who ruled in Moab and Jashubi Lehem. (These records are from ancient times.)

23They were the potters who lived at Netaim and Gederah; they stayed there and worked for the king.