Final answer:
Stephen Alonzo Jackson is recognized as the father of Kappa Sigma fraternity for his pivotal role in its development and the establishment of its Ritual.
Step-by-step explanation:
The person considered the father of Kappa Sigma is Stephen Alonzo Jackson. While other founding members such as William Grigsby McCormick, George Miles Arnold, and Edmund Law Rogers Jr. were instrumental in the establishment of Kappa Sigma, it was Stephen Alonzo Jackson who played a crucial role in the expansion and the establishment of the fraternity's Ritual, which laid the foundation for its future success.
He is often commemorated for his contributions that shaped the fraternity's values and its growth.