Hungary lost of her land & of her population. I'm assuming this would be the reason why it's very hard to find genealogy records This is just so disturbing to those whose Hungarian bloodlines are now severely compromised. Such a wrongdoing!
A Hungarian nationalist picture addressed to Italians (in Hungarian and Italian) denounces the 1920 Trianon Treaty for "vastly diminishing the size of Hungary", and shows an hypothetical dismemberment of Italy with a similar impact.
Sopron: "Heck, we love this place. We’re sops to its architecture, its sense of past times in Foter, its museums and pubs and restaurants, its very proximity to the lungs of the Lover Hills and Lake Ferto. We even love its title, ‘Most Faithful City’ (Civitas Fidelissima), a reference to a post-Trianon referendum of 1921 when its citizens elected to remain part of Hungary rather than be subsumed into Austria." Hungary: the Bradt Guide; www.bradtguides.com