Bashemath

So 'Esav went to Yishma'el and took, in addition to the wives he already had, Machalat the daughter of Yishma'el Avraham's son, the sister of N'vayot, to be his wife.

and Basmat Yishma'el's daughter, sister of N'vayot.

'Adah bore to 'Esav Elifaz, Basmat bore Re'u'el,

The names of 'Esav's sons were Elifaz, son of 'Adah the wife of 'Esav, and Re'u'el the son of Basmat the wife of 'Esav.

The sons of Re'u'el were Nachat, Zerach, Shammah and Mizah. These were the sons of Basmat 'Esav's wife.

The sons of Re'u'el 'Esav's son were the chieftains of Nachat, Zerach, Shammah and Mizah. These were the chieftains descended from Re'u'el in the land of Edom and from Basmat 'Esav's wife.