Princess Antonia of Brasland
From NSWiki
Princess Antonia of Brasland (1875-1949) was the daughter of Prince Paul of Brasland.
In 1899 she married Don Prospero Colonna dei Principi di Summonte, a diplomat who belonged to one of the most distinguished noble families of Italy. He was created Count Colonna by King Frederick IV. The couple had a son, Prosper, born in 1901.
The Princess was very popular among the royal family and was frequently present at Court events.