You should find correspondence between the plaintiff and the applicant on the grounds of their divorce. Children's names are generally not mentioned but their ages are. Normally you will also find a copy of the marriage certificate, and sometimes birth certificates of children to prove their paternity in this folder.
Old divorce cases dating back more than 30 years are available in the National Archives repository. These documents are called "illiquid cases" – generally a copy of the marriage certificate is included.
Newer divorce records are held at the Provincial Master of the Supreme Court, in the province where the divorce took place.
Divorces are also published in the Government Gazettes.