Bishop Gregory was born in Charlotte, NC on Dec 7, 1958, with the baptismal name of George, the first of two children of Peter and Antonia Tatsis. He is a graduate of the University of North Carolina at Chapel Hill earning a BA degree in Biology (1981) and the University of North Carolina at Charlotte earning a MS degree in Biology (1989). Working for more than 20 years in the field of Cardiovascular Research at Carolinas Medical Center in Charlotte, NC, he authored/co-authored over one hundred articles, abstracts, and book chapters.

A true son of the Church, from his early youth Archimandrite Gregory served in his home parish of Holy Trinity Greek Orthodox Cathedral in Charlotte, NC in various capacities including altar server, Sunday School teacher for 13 years and in several leadership positions including Parish Council President. He was also a founding member Read More..........