Lady Louise Windsor (Louise Alice Elizabeth Mary Mountbatten-Windsor; born 8 November 2003) is the elder child and only daughter of Prince Edward, Earl of Wessex, and Sophie, Countess of Wessex. She is the youngest granddaughter and second-youngest grandchild of Elizabeth II and the Duke of Edinburgh. Lady Louise is currently ninth in line of succession to the thrones of the 16 Commonwealth realms (having been eighth in line at the time of her birth).
| First Name | Louise |
| Middle Name | Alice Elizabeth Mary |
| Last Name | Windsor |
| Full Name at Birth | Louise Alice Elizabeth Mary Windsor |
| Other Names | Lady LouiseLady Louise Mountbatten-Windsor |
| Age | 9 |
| Date of Birth | November 8, 2003 |
| Birthplace | Frimley Park Hospital, Surrey |
| Eye Color | Blue |
| Hair Color | Blonde |
| Star Sign | Scorpio |
| Ethnicity | White |
| Nationality | English |
| High School | St George's School, Windsor Castle |
| Occupation Category | Royalty |
| Claim to Fame | Grandaughter of the Queen of England |
| Father | Prince Edward (father) |
| Mother | Sophie Rhys-Jones (mother) |
| Brother(s) | Viscount Severn (James) (brother) |
| Other Family Members | Queen Elizabeth (grandmother)Prince William Windsor (cousin)Catherine Middleton (cousin) |