Yes, he had 4 of them. Their names were Karl Hugh Kellogg , John
Leonard Kellogg, Irvin Hadley Kellogg (died when he was born),
William Keith Kellogg Jr.,Elizabeth Ann Kellogg Williamson
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Will Keith Kellogg
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Bruce Kellogg's birth name is William Bruce Kellogg.
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Cecil Kellogg's birth name is Cecil Charles Kellogg.