My name is ***** ***** I am a NSW Solicitor. Thank you for your question, and will do my best to assist you with your question. Please understand this is not legal advise but a guide to assist you.
Here is the section that would apply.
19. Who may be adopted
(1) On application by the Secretary or the principal officer of an approved agency but subject to this Act, the court may make an order for the adoption of a child who–
(a) had not attained the age of 18 years before the date on which the application was filed in the court; or
(b) has been brought up, maintained, and educated by–
(i) the prospective adoptive parent or either of the prospective adoptive parents; or
(ii) the prospective adoptive parent and his or her deceased spouse–
as the child of that parent or, as the case may be, of that parent and his or her spouse–
but the court shall not make an order for the adoption of a child who is, or has been, married.
(2) An order may be made under this Act for the adoption of a child notwithstanding that the child had, whether before or after the commencement of this section, and whether in Tasmania or elsewhere, previously been adopted.
(3) In this section,
spouse includes the person with whom a prospective adoptive parent had a significant relationship which was the subject of a deed of relationship registered under Part 2 of the Relationships Act 2003, which deed was revoked by the death of the person.
It is 1(b)(ii) that you would fall under.
You will need a solicitor to assist with this application as it has to be in court. If you are married then you cannot be adopted.
The act is at the following link.
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