KNOWLES, Charles James Pellimore Fitzwilliam b 2019 reg Q2 Kingston upon Thames (mother KOCH, not in DPB print or oniine)
Richard R
CHARLES WILLIAM FREDERICK LANCE Knowles b 27 Aug 1985 s&ha of Sir Charles Francis KNOWLES 7th Bt b 1951 and his former w Amanda Louise Margaret b 1955 reg Q2 London d of Lance(lot) Lee BROMLEY 1920-2013 of London by his 1952 m reg Q2 London to Rosemary Anne c1929- d of Capt Frederick George HOLBROOK c1896- by his 4 May 1926 m (All Souls, Hastings) to Helena Alice Margaret 1905-94 d of William John PASCOE 1873- . He m 7 March 2011 Holly Ann Daira KOCH.
I searched for Knowles/Koch births between 2011 & 2023 at GRO online and found the above. I then found the full names for this child on the peerage dot com website, where it appears the mother emailed the news to the site’s creator on 17 March 2021. The exact marriage date and Holly Koch’s full forenames are given on this site.