The oldest son of the Colour family and his wife welcome a daughter, the second son and his wife welcome a son
The oldest son's daughter - Her name is from the following list;
https://nameberry.com/blog/cool-unusual-girls-names-100-excellent-choices
The second son's son - His first name is from the following list;
https://nameberry.com/list/237/Literary-Names-for-Boys?all=1- His middle name is either autumn/fall inspired or numeric inspired (
https://www.behindthename.com/names/tag/numeric_meanings)
- His optional second name is from a Downtown Abbey character (
https://www.behindthename.com/names/gender/masculine/tag/downton_abbey_characters)