Estelle Manville Bernadotte
In 1928, Count Bernadotte married Estelle Manville, the daughter of Hiram Edward Manville, Chairman of the Board of the Johns-Manville Corp. Her father’s company made asbestos as a fire resistant roofing material.
On August 18, 1928 Time Magazine published this milestone:
Engaged. Count Folke Bernadotte, nephew of King Gustaf of Sweden; to Estelle Romaine Manville, Manhattan debutante, descendant of Jeoffrey de Magnavil, ally of William the Conqueror; in Pleasantville, N. Y.

The beautiful Countess Bernadotte in 1944
The couple was married in the Episcopal Church of St. John in Pleasantville, New York. This was quite an event as described here. The day after the wedding they visited the White House and President and Mrs. Coolidge.
The Countess “Estelle Bernadotte of Wisborg” (as she signed her name) with the Count had occasion to socialize, even at their home, with members of the American Legation in Stockholm including some of the American interness in 1944 and 1945.
(My thanks to Marlene A Koenig and Royal Musings for the wedding information.)