Green’s Dictionary of Slang

Taswegian n.

[abbr. + play on SE Glaswegian/Norwegian etc.]

(Aus.) a person from Tasmania.

[Aus] ‘Whisper All Aussie Dict.’ in Kings Cross Whisper (Sydney) xli 4/2: taswegian: Tasmanian.
[Aus]Sydney Morn. Herald 24 Sept. 1/9: Mrs E. Taylor [...] a third generation Tasmanian, is concerned at a current fashion for calling Tasmanians Taswegians.
[Aus]C. Bowles G’DAY 42: Tasmanians, also known as Taswegians.
[Aus]B. Moore Lex. of Cadet Lang. 385: Taswegian [...] a Tasmanian. The -wegian element of the term (deriving from such formations as ‘Norwegian’, ‘Glaswegian’) italicises the perceived ‘alienness’ of Tasmania and Tasmanians.
[US]Honolulu Star-Bulletin (HI) 14 Apr. F4/4: The population, which sometimes calls itself Taswegian, feels itself a very separate entity from Australia.