The Barony of Rowany has several neighbours serving areas adjacent to Sydney. Members of these groups often visit Rowany events, and members of Rowany often travel to their events as well.

• The Kingdom of Lochac covers Australia and New Zealand. The Barony of Rowany is part of Lochac.
• The Canton of Stowe-on-the-Wowld covers Western Sydney NSW and is part of Rowany.
• The Canton of Okewaite covers Goulburn NSW and the Southern Highlands of NSW, and is part of Rowany.
• The College of St Augustine covers the University of New South Wales, and is part of Rowany.
• The College of St Ursula covers the University of Sydney, and is part of Rowany.
• The Barony of Mordenvale covers Newcastle NSW and the surrounding area.
• The Barony of Politarchopolis covers the Australian Capital Territory.
• The Shire of Adora covers the Illawarra and South Coast of NSW.
• The Shire of Agaricus covers South-Western Sydney (Liverpool NSW and Campbelltown NSW).
• The Shire of Dismal Fogs covers the Blue Mountains area of NSW.