It is also viewed that they were the local powerful clan in the territories of the Kanshin-ji Temple of Kongo-san Mountain in Kawachi Province; however, place names that trace back their origins to the family name 'Kusuniki' has not been found in the Kawachi Province or its surrounding neighbourhoods.
また、河内国の金剛山観心寺領の在地豪族ともされるが、河内国や近隣には「楠木」という苗字の元となる地名はない。