Int. Standard Bible Encyclopedia ISUI is'-u-i. See ISHVI.

Multi-Version Concordance Isui (1 Occurrence) Genesis 46:17 And the sons of Asher; Jimnah, and Ishuah, and Isui, and Beriah, and Serah their sister: and the sons of Beriah; Heber, and Malchiel. (KJV WBS YLT)