10th century; some show this feast on July 3.
Several authorities refer to Saint Sunniva as an Irish nun who was
shipwrecked in Norway and set up a convent with her companions. There is
no information about her in Ireland, but according to tradition (which
is similar to that of Saint Ursula), she was a princess, nun, or both,
who fled from Ireland with her brother Alban and several other maidens.
Some say they were seeking a haven where they could live consecrated
lives in exile for Christ. She was shipwrecked off the west coast of
Norway and finally reached Selje Island. There they engaged in a devout,
communal life, dwelling in caves and subsisting on fish.
The story has two endings. One says that they were killed by people from
the mainland. The other relates that the neighbouring Jarl Haakon heard
about their landing and went to investigate. The community members fled
to the caves. Masses of rock crashed down and blocked all the entrances,
eventually killing the saints. When the caves were excavated much later,
Sunniva's incorrupt body was discovered.
In 995, Olaf Tryggyason built a chapel in her honour. In 1170, their
relics were enshrined in Bergen; Selje's church was given to the
Benedictines who dedicated it to Saint Alban (her brother?). Five
churches or ruins of churches still survive on the island
(
Benedictines,
Farmer,
Montague).
The Service to Saint Sunniva
http://www.orthodoxengland.org.uk/servsunn.htm