As already posted, the birth mother's name was shown both as BROWNLEY and SAVARNEY/SAVIANEY on other JANSCH birth regs in SA.
Birth
JANSCH Regina Bertha
27 Aug 1875
Father Heinrich JANSCH Mother Mary Ann SAVARNEY
At Friedrichswalde Kap 156/162
Death
BUTLER Regina Bessie
Father Yensch Henry Mother Mary Ann BROWNLEE
At Tallangatta 62 years 1937 Reg#17120
and her marriage with the surname mistranscribed

NSW
8145/1891
BUTLER William
TEUSCH Regina B
District Wentworth
Births in NSW
38614/1893
BUTLER Harriet S
Father William Mother Regina B
District Wentworth
17758/1896
BUTLER Anna B
Father William Mother Regina B
District Wentworth
Births Vic
BUTLER George Henry
Father William /Mother Bessie Regina YANSCH
At Cobram 1897 Reg#18130
BUTLER Benjamin Gibson
Father William Mother Bessie YANSCH
At Swan Hill 1899 Reg#30250
BUTLER May Gipson
Father William Mother Bessie YENSCH
At Mildura 1903 Reg#27474
BUTLER Byron August
Father Wm Mother Bessie YENSCH
At Tallangatta 1905 REg#14035
BUTLER Erin Eric
Father Wm Mother Bessie YENSCH
At Tallangatta 1906 Reg#30297
BUTLER Nancy Nina
Father William Mother Bessie Regina TENSCH
At Mitta Mitta 1909 Reg#21339
Death
BUTLER Nancy Nina
Father Butler Wm Mother Bessie Regina YENSCH
1909 At Tallangatta Reg#10671
BUTLER Bernard Beric
Father William Mother Bessie YENSCH
At Tallangatta 1910 Reg#31050
BUTLER Nancy Nellie
Father Willia m Mother Regina Bessie YENSCH
At Tallangatta 1913 Reg#26631
BUTLER Dale David
Father William Mother Regina Bessie YENSCH
At Tallangatta 1919 Reg#15221
Cando