_. Zara Anne Elizabeth Tindall, MBE (b 15 May, 1981, nee Phillips), scion of the Royal House of Windsor, & wife of Michael James Tindall, MBE (b 18 Oct 1978), has given birth to a son, Lucas Philip Tindall, 21 March, 2021, a brother for Mia Grace [born 17 January, 2014], and Lena Elizabeth [born 18 June, 2018].
The infant is the first grandson for HRH The Princess Royal and her former husband Capt Mark Phillips, and the Queen and Duke of Edinburgh's tenth great-grandchild.
Mike Tindall is a son of Philip Tindall, by his wife the former Linda Shepherd, & Zara is the only dau of Capt Mark Antony Peter Phillips, CVO, ADC (b 22 Sept 1948), descended from the wealthy Tiarks landed family, by his 1st wife HRH The Princess Anne Elizabeth Alice Louise, The Princess Royal, KG (b 15 Aug 1950), only dau of HM Queen Elizabeth II, &c.
The baby is the Princess Royal's fifth grandchild, and first grandson. Her son Peter and daughter-in-law, Autumn, have two daughters, Savannah Anne Kathleen (b 29 Dec, 2010), and Isla Elizabeth (b 29 March, 2012). Zara and Mike Tindall's first daughter, Mia Grace, was born 17 January, 2014 and their second daughter, Lena, was born 18 June, 2018.
The Queen's great-grandchildren:-
 Savannah Anne Kathleen Phillips [born 29 Dec 2010]
 Isla Elizabeth Phillips [born 29 March, 2012]
 HRH Prince George of Cambridge [born 22 July, 2013]
 Mia Grace Tindall [born 17 January, 2014]
 HRH Princess Charlotte of Cambridge [born 2 May, 2015]
 HRH Prince Louis of Cambridge [born 23 April, 2018]
 Lena Elizabeth Tindall [born 18 June, 2018]
 Archie Harrison Mountbatten-Windsor [born 6 May, 2019]
 August Philip Hawke Brooksbank [born 9 February, 2021]
 Lucas Philip Tindall [born 21 March, 2021]