Genesis 38:6 And Judah took a wife for Er his firstborn, whose name was Tamar. (Judah's daughter-in-law)
II Samuel 13:1 And it came to pass after this, that Absalom the son of David had a fair sister, whose name was Tamar; and Amnon the son of David loved her. (See I Chronicles 3:9 below, Tamar, the only daughter of David that is named in the Bible. Apparently, she was the daughter of David's wife Maacah in II Samuel 3:3 above)
II Samuel 14:27 And unto Absalom there were born three sons, and one daughter, whose name was Tamar: she was a woman of a fair countenance. (David's daughter-in-law by Absalom.)
Ezekiel 47:19 And the south side southward, from Tamar even to the waters of strife in Kadesh, the river to the great sea. And this is the south side southward. (There was also a town named Tamar.)