Here is a nice interview of count Carl Johan and countess Gunnila from 2010.
They tell that they had known each other "always", they met for the first time in 1930 and Gunnila and Carl Johan's first wife Kerstin were good friends. Gunnila tells that Greta Garbo stayed at her family's home in Sörmland when she visited Sweden, but she stopped to come when the war started in 1939. Greta Garbo had met Gunnila's parents in Folke Bernadotte's wedding in 1928. In 1950's Greta Garbo came again to Sweden and met Carl Johan and Kerstin Bernadotte. In September 1988 Carl Johan and Gunnila got married in Copenhagen, and prince Bertil and princess Benedikte attended at the wedding.
They tell also that in the summer 2008 Victoria visited them with Daniel to present them to him. Count Carl Johan had started to get some balance problems and when they went down the hill, Daniel took him under his arm and helped him.
The article has a lot of nice, old and newer photos.
Bernadotten som inte ville bli kung - Helsingborgs Dagblad
What a lives Carl Johan and Gunnila have lived, both apart and together.