A friend posed an interesting question & may need legal consultation to remedy a problem. She & her husband have been happily married for 18 yrs. They were married in a religious ceremony when she was 19 in NYS. They now have several children. Recently, we were talking about estate planning, living wills, & guardianship for her kids in the event of an emergency. I asked her about her wedding & learned she never obtained/filed a marriage license!. Until I brought it up, she never knew such a license existed or is required! Now, its 18 years post-wedding day. What must be done to ensure that they are viewed as legally married in New York State? They have always filed joint tax returns as a married couple. What actions must be taken? What corrective measures, if any, should be made?