The name Korban and the word korban have two different meanings in Hebrew. The name means "a gift from G-d and the word means "sacrfice / victim". Before I named my son this after the movie The Fifth Element starring Bruce Willis, I did a full research in the hospital.
It is not true that the spelling CorbAn spelled with an "a" (derived from the Hebrew word Korban) means a sacrifice of blood. It is a Hebrew word used un-translated in the Greek of the New Testament, and is probably left that way simply because there was no Greek equivalent. It is only used once in the English Bible and Mark 7:11 (NIV) is the only place that it is quoted. It actually means ‘a gift' OR ‘a sacrificial offering'. It is considered to be an offering to God of any sort – either with blood or without blood – particularly in fulfillment of a vow. It means any gift given by God and dedicated back to Him.The Hebrew word "korban" comes from a Hebrew root meaning "close." The word "korban" literally means "that which has been brought close" and it refers to the sacrifice as something that enters into God's presence in the Sanctuary.
― Anonymous User 8/17/2018
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Rather than be derived from a French surname, this name could also be derived from Corbinien, which is the French form of Corbinianus (see Korbinian in the database). Given that there is a saint with this name, it is not impossible that there were people named after the saint in France, and quickly had the cumbersome name shortened to Corbin.
Actually, "Corban" is mentioned in the Bible (Mark 7:11) as being a "gift to God", in reference to money, not a blood sacrifice, although I suppose that is a possibility as well. In any case, if you are a Christian, the name could have a wonderful meaning.