Elizabeth Stokes (stillborn)

Elizabeth was stillborn. Frances Brandon and Adrian Carew would go on to name another daughter Elizabeth the next year, but she too would die young.

from the Wikipedia page of Frances Brandon:

She and Stokes married in 1555.[10] Three children were born to the couple:

• Elizabeth Stokes (20 November 1554), stillborn.
• Elizabeth Stokes (16 July 1555 – 7 February 1556), died in infancy.
• A son (December, 1556), stillborn.

Source [10]: Lady Jane Grey: A Tudor Mystery by Eric Ives, 2009