Debbie, Found your message on Genealogy.com Hope you are still current with your email address.
I am also a Seckinger thru marriage. One of my Great-Grandfathers Daughter..Suzie Tuttle married a Robert P. Seckinger around 1850. We are also from around Marlow, Springfield, and Ebenezer. I do have 3 or 4 Salzburger Lines "Griner, Crawford, Seckinger, Hinely, Heidt". I currently live in Concord, NC but my dad grew up in the Country and we still have Tuttle reunions off of hwy 80 at the old home place. I also know that the Salzburgers have fantastic genealogical lineage charts on different families. I have one on the Hinely's going back to 1705.