The 32-year-old cousin of Princes William and Harry is the daughter of Princess Anne and she is fifteenth in the royal line of succession. She does not hold a royal or noble title as she is the granddaughter of a monarch in the female line and her father (Captain Mark Philipps) does not hold a royal title.
“Mr and Mrs Mike Tindall are very pleased to announce that Zara Tindall is expecting a baby in the new year,” Buckingham Palace said in a statement (via BBC). “The Princess Royal and Captain Mark Phillips, Mr Phillip and Mrs Linda Tindall, and members of both families are delighted with the news. This baby will be the first child for Mike and Zara and the third grandchild for the Princess Royal.”
Congratulations to the happy couple!