Joe Jonas and Sophie Turner's Youngest Daughter's Name Revealed in Divorce Docs

The name of Joe Jonas and Sophie Turner's youngest daughter has been revealed. The 1-year-old's name is Delphine, per court docs obtained by ET on Wednesday. The Jonas Brother singer and 'Game of Thrones' alum are also parents to 3-year-old Willa. The legal documents are part of the exes' divorce proceedings, following their joint announcement this month that they're going their separate ways after four years of marriage.