from
Easton's 1897 Bible Dictionary
Tamar
palm. (1.) A place mentioned by Ezekiel (47:19; 48:28), on the
southeastern border of Palestine. Some suppose this was "Tadmor"
(q.v.).
(2.) The daughter-in-law of Judah, to whose eldest son, Er,
she was married (Gen. 38:6). After her husband's death, she was
married to Onan, his brother (8), and on his death, Judah
promised to her that his third son, Shelah, would become her
husband. This promise was not fulfilled, and hence Tamar's
revenge and Judah's great guilt (38:12-30).
(3.) A daughter of David (2 Sam. 13:1-32; 1 Chr. 3:9), whom
Amnon shamefully outraged and afterwards "hated exceedingly,"
thereby illustrating the law of human nature noticed even by the
heathen, "Proprium humani ingenii est odisse quem laeseris",
i.e., "It is the property of human nature to hate one whom you
have injured."
(4.) A daughter of Absalom (2 Sam. 14:27).