In an interesting ruling, a top New York rabbinical court has accepted compelling genealogical evidence of Jewish ancestry as proof that someone is Jewish under Jewish law. The beit din (Court of Justice) ruled in June that a Missouri woman who was raised in a Christian home is Jewish under Jewish law because the "genealogical paper trail clearly demonstrates that her third great-grandmother along strict maternal lines was Jewish." The judgement doesn't mean that her lineage automatically makes her Jewish if she doesn't choose to be, it just means she doesn't have to undergo the usual conversion process to become Jewish.