Which founder was born in Illinois and was a constant supporter of the Alpha Chapter?

The founder born in Illinois and known for her unwavering support of the Alpha Chapter is Marguerite Young Alexander. Her contributions to Delta Sigma Theta Sorority, Incorporated, include not only her participation in the establishment of the organization but also her strong advocacy and encouragement for the ongoing activities and initiatives stemming from the Alpha Chapter. She played a vital role in promoting the sorority’s mission and goals, ensuring that the foundation laid by the founders continued to thrive. Her Illinois roots, coupled with her dedication, make her a notable figure within the sorority's history.

While each of the other founders made significant contributions to Delta Sigma Theta, their individual backgrounds do not align with the specific detail of being born in Illinois or exhibiting the same level of prominent support for the Alpha Chapter as Marguerite Young Alexander.