Una was the Gangrel Archbishop of Dublin and a prominent figure within the Sabbat.
Una was one of the signatories of the revised Code of Milan in December 21, 1933. The treaty was a medieval code of conduct, but it managed to keep order within the sect.
In the 20th century, Dublin was conquered by the Camarilla Ventrue of the Connachta. When the Sabbat took back Dublin in 1999 under Virginie, Una was not involved. Her fate is unknown.