She was baptized in the Private Chapel of Windsor Castle on 24 April 2004 and her godparents were:
- The Lady Alexandra Etherington (her distant cousin)
- The Lady Sarah Chatto (her 1st cousin 1x removed)
- The Lord Ivar Mountbatten (her distant cousin)
- Mr. Rupert Elliott
- Mrs Urs Schwarzenbach
Lady Louise began her education at St. George's School, Windsor Castle in 2007. She is presently in year 4 (equal to 4th grade in the US system). St. George's School, Windsor Castle was previously attended by her cousin Princess Eugenie from 2001-2003.
There is some argument as to what her official title and style actually is. In Letters Patent issued in 1917 by Lady Louise's great-great grandfather, King George V, that still remains in force today, she is legally entitled to the title and style Her Royal Highness Princess Louise of Wessex. However, upon the marriage of her parents in 1999, her grandmother released a press release via Buckingham Palace that announced
that her youngest grandchildren would be styled as children of Earl's children in order to avoid some of the burdens associated with royal titles. There are two opposing opinions as to whether or not Louise is "legally" a princess and Her Royal Highness: Some experts consider the Queen's press release to not have enough legal force to override the 1917 letters patent, whereas other experts contend that the Queen's will, however expressed, is law in matters of royal titles and styles. If the latter is the case, then the 1960 letters patent is also applicable and Louise bears (but is seldom styled with) the surname Mountbatten-Windsor. However, either way, she is presently 9th in line for the British Throne after three uncles, four cousins, her father and brother.