1 Chronicles 11:31

Overview - 1 Chronicles 11
David by general consent is made king at Hebron.
He wins the castle of Zion from the Jebusites by Joab's valour.
10 A catalogue of David's mighty men.
Treasury of Scripture Knowledge

1 Chronicles 11:31  (King James Version)
Ithai the son of Ribai of Gibeah, that pertained to the children of Benjamin, Benaiah the Pirathonite,

The variation of ['Iythay ,] {Ithai,} and ['Ittay ,] {Ittai,} simply arises from the elision of [Ywd,] {yood,} which is compensated by the reduplication of the next letter.
2 Samuel 23:29