Andronikos Family-Possible Name Change?

Hi does anyone have any information on a Stelios Andronikos that might have been known as Stylianos Andrew?
All I know is that a Stelios Andronikos, son of George Andronikos (d. 1937) and Fotine Souris (b. 1890s) went to Australia. Before that he probably lived in Piraeus.
Also found this info-
Title: Stylianou [known as Steliou], Andronicos [known as Andrew] and wife Eleni [known as Helen] [nee Petrou-Kilili]
Series number: J25
Control symbol: 1962/6058
Contents date range: 1962 - 1977
 Access status: Not yet examined
Location: Brisbane
Barcode: 3064891
 
Title: Andronicos Stylianou [Application for landing permit, form number 40][box 95]
Series number: SP248/1
Control symbol: STYLIANOU ANDRONICOS
Contents date range: 1951 - 1951
Access status: Not yet examined
Location: Sydney
Barcode: 9438904

Thanks
Peter