"Foreign Countries" in this case signifies portraits painted outside Flanders. See also listed in this database: Corpus Rubenianum Part XIX, vol.2, "Portraits of Identified Sitters Painted in Antwerp." N.B. Parts XIX, vol.3 "Portraits of Unidentified Sitters" is scheduled for future publication. Vol. 1 is available as downloadable PDF on the Corpus Rubenianum Website (see Full Text link).