Milcah
Parents: Called "the daughter of Haran"; possibly Haran, Terah's son.
Siblings: Iscah; Haran is said to be "the father of Milcah, and the father of Iscah." See Genesis 11:27-32 for the descendants of Terah; I believe this may be the sister of Lot.
Married: Nahor.
Children: Huz, Buz, Kemuel, Chesed, Hazo, Pildash, Jidlaph, and Bethuel.