The surname Dorrian is spelled Ó Deoráin in Irish.
Ó Deoráin (masc.)
Ní Dheoráin (fem.)
Dorian is an Irish name and a variant of the name Doran meaning "pilgrim" or "stranger".
Antonia Dorian's birth name is Aphrodite Antonia Dorian.
Joanne Dorian's birth name is Joanne Dorian Allswang.
Shane Dorian's birth name is Patrick Shane Dorian.
Dorian Alvarez's birth name is Dorian O Alvarez.
Dorian Hartley's birth name is Dorian Riley Hartley.
Dorian Bowen's birth name is Dorian Anne-Crimy Bowen.
Robert Dorian Gregory's birth name is Robert Dorian Gregory.
Dorian Leigh Parker's birth name is Dorian Elizabeth Leigh Parker.
Johnson is not an Irish name. This is not to say there are not Johnsons with Irish ancestry. So no Irish county is associated with the name Johnson.
Roibín
Maxime Dorian's birth name is Maxime Marie Freddy Flornoy.