I am researching the Kellinger-Fitzgerald descendants--all from Pennsylvania and have found a triple Steffy connection.It appears that Mary Kellinger (c. 1784) married Peter Steffy; her brother, George Kellinger, married Elizabeth Steffy (c. 1787.); and another sister, Elizabeth Kellinger married John Steffy.(Note: Kellinger also appears as Killinger here and there.)Any information is welcome.