Tragically, Douglas died in a car accident in Brazil in January 1961, just six months after his father's similar death in Sweden.

[2][3] Douglas grew up in Villa Parkudden [sv] on Djurgården in Stockholm and attended Norra Latin from first grade until studentexamen.

In 1950, he was appointed chargé d'affaires ad interim in Jakarta, and in 1953, he became a counselor at the Swedish embassy in Washington, D.C., with the rank of minister plenipotentiary.

[5] In 1958, he returned to the Ministry for Foreign Affairs as a director,[6] and in February 1960, he was appointed ambassador to Rio de Janeiro, assuming the post in April of that year.

As the casket was carried out of the aircraft, an honor guard of eight personnel from the Civil Aviation Administration stood in formation.

After a wreath-laying ceremony, the casket was placed in a hearse and transported directly to the Douglas family estate, Stjärnorp Castle in Östergötland.

Music director Arthur Bartler from Linköping played "Arioso" by Johann Sebastian Bach on the violin.