QV 33 is the tomb of a Queen named Tanedjemet. It is not clear when the tomb was constructed. In Porter and Moss the tomb is tentatively dated to the 20th dynasty, but it has been suggested the Queen may date to the late 18th or early 19th dynasty.
Inscriptions from QV 33 as copied by Lepsius
The inscriptions show that Tanedjemet was a Mistress of the Two Lands and hence held a title typical for a Queen. There is also in inscription mentioning a King's daughter, and if this relates to the same woman, we would have a King's daughter who would in time have become a queen.
It is not clear where this Queen fits in with the respect to the royal family. There has been some speculation that the 'ta' part of the name should be read as 'Mut'. The idea that QV 33 belonged to Horemheb's Queen Mutnodjemet dates back to Hari. This is a matter of interpreting the actual bird glyph used. Elisabeth Thomas seems to argue however in her article that the bird is more consistent with the 'ta' glyps.
If the name were Mutnodjemet, this could be Horemheb's Queen. Mutnodjemet, wfe of Horemheb, is thought to have been buried in Saqqara however.
•Porter and Moss, Volume I Part 2. The Theban Necropolis. Royal Tombs and Smaller Cemeteries. (2nd ed.) 1999 available online.
•Lepsius, Denkmahler, Texts, L. D. Text, iii, pp. 236.
•Elizabeth Thomas , Was Queen Mutnedjemet the Owner of Tomb 33 in the Valley of the Queens?, The Journal of Egyptian Archaeology , Vol. 53, (Dec., 1967) , pp. 161-163