Princess Ottonia of Brasland
From NSWiki
Princess Ottonia of Brasland (1891-1973) was the daughter of Prince Carl Johan of Brasland.
In 1910 he married François de Pottin, a scion of an old Arenlander noble family. He was created Count de Pottin on the day of the wedding. They had three children: Henri (born 1912), Hélène (born 1914) and Elisabeth (born 1917; spinster).
Ottonia was very religious, and she supported many Catholic organisations.
She died in 1973.