In essence, the parties to a informal marriage, like ceremonial marriage, must be of the opposite sex, of legal age, and possess no legal impediment, such as those concerning kinship or the existence of a current marriage.
MEETING THE THREE-PRONG TEST
A finding of the existence of a common law or informal marriage is only justified if the evidence shows that the parties agreed to be married, that they lived together in Texas as husband and wife, and they have publicly represented themselves as married. All three of these requisites must exist at the same time. In addition, the common law marriage without formality statute precludes proof of the existence of an informal marriage if the acts occurred in a state other than Texas.
Evidence to prove a common-law marriage in the States that recognize such marriages must include:
The statements of the husband, wife, and relatives must be made on special forms, Statement Regarding Marriage or Statement of Marital Relationship, submit evidence that confirms that you had a common-law marriage, such as mortgage/rent receipts, bank records, insurance policies, etc.
If you adequately explain why you cannot obtain the required statements from relatives, you may submit statements from other persons who know the facts. Provide any other investigative evidence relating to your case.