Crull, Kroll, Croll, Correll, Creel, Criel, Croyle, Krall, Krull, Kyrle, Kroll The purpose of the project is to link Crull's worldwide in an OPEN Crull Genealogy project and to accumulate genealogy and disseminate so Crull's everywhere can know their heritage. MALES, JUST ORDER THE $99 Y 12 SEQUENCE TEST. WE REALLY NEED GROLL Participation. We believe this to be the missing link for most family matches.