In the Bible, Jedidiah is an alternative name for Solomon. Solomon was the son of King David and his wife, Bath-sheba.
The bestowing of this name is variously attributed to God, the prophet Nathan or David, but it is only used in a handful of instances before the name Solomon takes over. In any case, the name Jedidiah is widely understood among biblical scholars to be symbolic of God's acceptance of the child, especially by comparison to David's earlier, illegitimate child, who died shortly after birth.
It is translated as 'beloved of Jah (or God)', and occurrences of this name can be found in 2 Samuel 12:24-25.