What is diana krall sons?

Diana Krall has two sons, named Dexter Henry Lorcan and Frank Harlan James. Dexter was born in December 2006 and Frank was born in December 2010. They are the children of Diana Krall and her husband, musician and songwriter Elvis Costello. The family tends to keep a low profile, so not much is known about their personal lives. However, Diana has mentioned in interviews that her sons bring her joy and inspiration in her music career.