"It was just a name they liked," a spokesperson for the couple told Sky News this week, Harper's Bazaar reports of the somewhat unconventional choice of first name.
The Tindalls also eschewed a traditional royal moniker when naming their first child, Mia, but have paid tribute to Queen Elizabeth II with their newest daughter's middle name.
Buckingham Palace confirmed that the Queen's newest great grand-daughter was born at Stroud Maternity Unit, Gloucestershire, on June 18.
The baby is the Queen's seventh great-grandchild and Princess Anne, Zara's mother's, fourth grandchild. Zara and Mike already have one daughter, three-year-old Mia (pictured above).