Albert Barnes Commentary 1 Chronicles 1:41

"The sons of Anah: Dishon. And the sons of Dishon: Hamran, and Eshban, and Ithran, and Cheran." — 1 Chronicles 1:41 (ASV)

Amram (or rather, Hamran) and Hemdan (as noted in the margin) differ in the original text only by the same letter that marks the difference in 1 Chronicles 1:30.