Following her execution, Anne's
body was placed in a chest that had once contained bow staves and buried without fanfare at St. Peter ad Vincula at the Tower of London, in a communal grave with other execution victims. The place believed to be her grave (under the chancel floor stones) is now marked by a memorial stone. There has however been some skepticism about whether or not it is Anne's remains under the marker. Tudor historian Alison Weir writes, "...we can be almost certain that Anne’s memorial stone does not mark the last resting place of her actual remains, and that she lies beneath Lady Rochford’s memorial" (The Lady in the Tower Pg. 345)
During the victorian era, the remains of Anne Boleyn and Catherine Howard were discovered during renovations to the chapel. According to Antonia Fraser, their bones were discovered under the paved area in the chapel chancel and were then reburied in proper coffins within the crypt which you can visit today. Dr. Mouat who handled the remains described the body of Anne as follows:
The bones found in the place where Queen Anne is said to have been buried are certainly those of a female in the prime of life, all perfectly consolidated and symmetrical and belong to the same person. The bones of the head indicate a well-formed round skull, with an intellectual forehead, straight orbital ridge, large eyes, oval face, and rather square full chin. The remains of the vertebra and the bones of the lower limbs indicate a well-formed woman of middle height with a short and slender neck. The ribs shew [sic] depth and roundness of chest. The hand and feet bones indicate delicate and well-shaped hands and feet, with tapering fingers and a narrow foot. (Source:
Notices of the Historic Burials in the Chapel of St. Peter ad Vincula in the Tower of London With an Account of the Discovery of the Supposed Remains of Queen Anne Boleyn by John Murray)
The body is also said to have been a woman aged between twenty-five and thirty. This is too young to be Anne who was most likely born in 1501 and executed in 1536, while Jane was born no later than 1512 which means the body would be within the age range of Jane's years.
We may never know the truth of who lies beneath Anne Boleyn's grave marker, yet I tend to agree with Weir's argument regarding the location of Anne's bones. I base my assertions on several pieces of evidence. First is the description of Anne's body by Dr. Mouat, Anne was often described as having (and can be seen in the known portraits of her) to have a small pointed chin, not a full square one. She also is reported by many at court, in surviving documents, to have a long, slender neck not a short one, while surviving portraits of Jane Boleyn show her with a full, square chin and short neck. Secondly is the recorded statement by John Stowe, Tudor court chronicler, which states " There lieth before the high altar in St. Peter's church, two dukes between two queens" The bones buried her were identified as a small woman between the ages of nineteen and twenty-three (obviously belonging to Catherine Howard) and a larger framed woman somewhere between thirty and forty (probably Anne Boleyn)This statement and the forensic evidence would support the theory that Anne was buried next to her brother under the marker of Lady Rochford while Jane Boleyn occupies the space beneath Anne's memorial.

Anne's grave marker