The Frank Porter book lists 8 children for JOHN PORTER and wife NANCY MCKENZIE.
However, according to this source, there was also a son CALEB:
SOURCE: GENEALOGICAL AND PERSONAL HISTORY OF FAYETTE COUNTY Jordan and Hardin (New York: Lewis Historicla Publc. Co. 1912) vol. 1,II,III.
JOHN PORTER born in England 1690 came to America and settled at Baltimore Maryland in 1715
JOHN s/o JOHN b. abt. 1720 at Baltimore; m. NANCY MCKENZIE d/o MOSES MCKENZIE and left eight kids.
CALEB PORTER s/o JOHN born in Maryland abt. 1760; lived at Ellicott Mills near Baltimore; about 1800 came to Pennsylvania where he purchased twelve hundred acres of land in Westmoreland Co. on which he built a stone house; two of his sons JAMES and JOSEPH PORTER served in Union Army during Civil War.
Can you confirm or deny or elaborate upon this info?