From the Creation to the Death of Isaac - Flavius Josephus

he was therefore purifying his followers, he lighted upon the gods of Laban;
(for he did not before know they were stolen by Rachel;) and he hid them in
the earth, under an oak, in Shechem. And departing thence, he offered
sacrifice at Bethel, the place where he saw his dream, when he went first into
Mesopotamia.
3. And when he was gone thence, and was come over against Ephrata,
he there buried Rachel, who died in child-bed: she was the only one of
Jacob's kindred that had not the honor of burial at Hebron. And when he had
mourned for her a great while, he called the son that was born of her
Benjamin, (2) because of the sorrow the mother had with him. These are all
the children of Jacob, twelve males and one female. - Of them eight were
legitimate, - viz. six of Lea, and two of Rachel; and four were of the
handmaids, two of each; all whose names have been set down already.
Footnotes:
1. Of this slaughter of the Shechemites by Simeon and Levi, see Authent.
Rec. Part I. p. 309, 418, 432-439. But why Josephus has omitted the
circumcision of these Shechemites, as the occasion of their death; and of
Jacob's great grief, as in the Testament of Levi, sect. 5; I cannot tell.
2. Since Benoni signifies the son of my sorrow, and Benjamin the son of
days, or one born in the father's old age, Genesis 44:20, I suspect
Josephus's present copies to be here imperfect, and suppose that, in
correspondence to other copies, he wrote that Rachel called her son's
name Benoni, but his father called him Benjamin, Genesis 35:18. As for
Benjamin, as commonly explained, the son of the right hand, it makes
no sense at all, and seems to be a gross modern error only. The
Samaritan always writes this name truly Benjamin, which probably is
here of the same signification, only with the Chaldee termination in,
instead of im in the Hebrew; as we pronounce cherubin or cherubim
indifferently. Accordingly, both the Testament of Benjamin, sect. 2, p.
75