Daniel in Wikipedia
According to the Bible, Daniel, also known as Chiliab, was the
second son of David, King of Israel, with Abigail, widow of
Nabal the Carmelite, David's third wife. (1 Chronicles 3:1 ,
cf 2 Samuel 3:3 ) Unlike the other of David's three elder
sons, Amnon, Absalom, and Adonijah who were important
characters in 2 Samuel, Daniel is only named in the list of
David's sons and no further mention is made to him. Though
being the second son, Daniel was not a contender for the
throne of Israel, even after the death of the first-born
Amnon, the third-born Absalom and fourth-born Adonijah. The
throne eventually passed to his younger half brother, Solomon.
Daniel is known as Daluyah in the Septuagint.
According to Rashi, some questioned whether Abigail was
pregnant through David or her first husband, Nabal; therefore,
God arranged that Daniel would resemble David. It is possible
his name "Chiliab," which can be translated "perfection of the
father," is a reference to (or cause of) that legend.
Read More about Daniel in Wikipedia