It is not so much as marrying into Orthodoxy as it is a matter of being Jewish according to Orthodox standards and agreeing to live as Orthodox Jews. If a Jewish couple goes to an Orthodox rabbi to get married, the Orthodox rabbi will typically investigate their Jewish status (if he does not already know it). The key question is, are both descended from Jews along the maternal line, or if any of the maternal ancestors are converts, were the conversions overseen by Orthodox rabbis. Assuming that these conditions are met, and assuming that the couple agrees that they will keep an Orthodox household, the rabbi is likely to be content. This is true even if the bride and groom are from non-Orthodox backgrounds. If the bride or groom came from non Orthodox backgrounds, the rabbi might ask them t