The Lebensborn project was founded on December 12th, 1935 by Heinrich Himmler. Within the same year, the Nuremberg Laws were passed which prohibited the intermarriage, sexual relations and citizenship of all Jews and "Non-Aryans".
The purpose of the Lebensborn project was to increase Germany's declining birthrate and create a new generation that would lead the Nazi/Aryan nation by allowing "racially pure" women to secretly conceive with an SS officer and give birth to a "racially pure" child. The children born into Lebensborn nurseries were taken by the SS. Expectant mothers through the program, regardless of their marital status, were provided with a home and a safe environment for birthing the child.
Here are links for further research:
1. http://www.jewishvirtuallibrary.org/jsource/Holocaust/Lebensborn.html
2. http://www.jewishgen.org/ForgottenCamps/General/LebensbornEng.html