For purposes of determining whether an individual may qualify for benefits as the child of a deceased miner, the provisions of §725.208 shall be applicable. As used in this section, the term “beneficiary” means only a surviving spouse entitled to benefits at the time of such surviving spouse's death (see §725.212), or a miner. For purposes of a survivor's claim, an individual will be considered to be a child of a beneficiary if:

(a) The courts of the State in which such beneficiary is domiciled (see §725.231) would find, under the law they would apply in determining the devolution of the beneficiary's intestate personal property, that the individual is the beneficiary's child; or

(b) Such individual is the legally adopted child of such beneficiary; or

(c) Such individual is the stepchild of such beneficiary by reason of a valid marriage of such individual's parent or adopting parent to such beneficiary; or

(d) Such individual does not bear the relationship of child to such beneficiary under paragraph (a), (b), or (c) of this section, but would, under State law, have the same right as a child to share in the beneficiary's intestate personal property; or

(e) Such individual is the natural son or daughter of a beneficiary but does not bear the relationship of child to such beneficiary under paragraph (a), (b), or (c) of this section, and is not considered to be the child of the beneficiary under paragraph (d) of this section, such individual shall nevertheless be considered to be the child of such beneficiary if the beneficiary and the mother or father, as the case may be, of such individual went through a marriage ceremony resulting in a purported marriage between them which but for a legal impediment (see §725.230) would have been a valid marriage; or

(f) Such individual is the natural son or daughter of a beneficiary but does not have the relationship of child to such beneficiary under paragraph (a), (b), or (c) of this section, and is not considered to be the child of the beneficiary under paragraph (d) or (e) of this section, such individual shall nevertheless be considered to be the child of such beneficiary if:

(1) Such beneficiary, prior to his or her entitlement to benefits, has acknowledged in writing that the individual is his or her son or daughter, or has been decreed by a court to be the father or mother of the individual, or has been ordered by a court to contribute to the support of the individual (see §725.233(a)) because the individual is a son or daughter; or

(2) Such beneficiary is shown by satisfactory evidence to be the father or mother of the individual and was living with or contributing to the support of the individual at the time such beneficiary became entitled to benefits.