I am a DAR member and a past chapter registrar. The DAR requires documentation from the person applying back to the ancestor. From you the applying member, you need to provide your birth certificate, if married a copy of your marriage license, your parents birth certificate and if deceased a copy of their death certificate, parents marriage license. You need to provide this proof for each generation going back, which means proving each birth, death, marriage and parents, and that the individual is a child of the parents listed. You can use deeds, probate records, obituaries, wills, census records, affidavits given in court, as an example my grandmother did not have a birth certificate and she gave a sworn affidavit in front of a notary public as to her name at birth, when she was born and who her parents were. This affidavit along with census records showing her in her parents household when she was a child was acceptable to the DAR to prove her date of birth. Some bible records are accepted if the copy right date of the bible precedes the date given for the individual, this would tend to indicate the event was likely written in the bible at or about the time of the event instead of some much later date. The DAR has tightened their document requirements and some previously accepted published genealogies are no longer accepted. You also need to prove the revolutionary war service or that the individual aided the cause of the American Revolution, i.e., provided supplies for the war effort, served in a local office or served as a member to the state legislature, etc. (justice of the peace, constable, etc.) that supported the revolution. All documents submitted for membership are kept strictly confidential.