Legal Question in Family Law in California

A birth certificate or INS records or citizenship status have nothing to do with marriage or divorce. If two unmarried people meet the requirements for issuance of a marriage license in the jurisdiction in which they want to get married, and then fulfill the requirements of solemnizing, recording and consumating the marriage, it's legal. As for spousal support, there is no bright line as to when support is ordered. There is a standard that for marriages of under ten years support is almost never ordered for more than 1/2 the length of the marriage. For a 2.5 year marriage, support may not be ordered at all, but could be. She will be entitled to a claim against your pension because that is deferred compensation earned during marriage. For such a short marriage, however, you should be able to work out a relatively cheap buy-out. She won't want to wait until you retire, which gives you the chance to pay present value of a future revenue stream, which can be quite cheap if you are young enough.

If you were validly married, your marriage is valid. I fail to understand your theory about the birth certificate. Is it your argument that because her birth certificate is lost, she was not really born, and therefore does not exist? There is no formula set in stone for spousal support, there only statutory factors tha the judge applies in determining whether or not to award spousal support.