3
Australian Government defined Marital status in below link.
http://www.abs.gov.au/ausstats/abs@.nsf/Lookup/2901.0Chapter40402011

The marriage status are
o Never married;
o Widowed;
o Divorced;
o Separated; and
o Married.
o Married de facto

Other status stated in a recent released fact sheet for same sex marriage are
o Never validly married
o Divorce pending
Reference: https://www.ag.gov.au/FamiliesAndMarriage/Marriage/Documents/Fact-sheet-Changes-to-marriage-forms-and-certificates.pdf

Since the default enum values of D365FO are not enough and not complying with Australian standard, extensibility for base enum [DirPersonMaritalStatus] is required.
STATUS DETAILS
Declined