Hi
Here are burials in WA for people of the names.
Mary Ann's birth date is way out.
So..
MARY ANN SEYMOUR KB00089145
Aged 88 20/02/1950 VICTORIA PARK
Grave/Memorial Location
KARRAKATTA CEMETERY ANGLICAN GC 0115
K0001544 EXPIRED UNKNOWN
THOMAS SMYRNA SEYMOUR GB00003406
Aged 73 14/09/1951 NEDLANDS
Grave/Memorial Location
GUILDFORD CEMETERY GENERAL B 0074
G0003156 EXPIRED 17/09/2001
The DEATH CERTIFICATE for this Mary Ann Seymour is available for purchase
SEYMOUR MARY A. Female @ PERTH reg 424 in 1950
Sue