Josephus Is A Boys Name Of Hebrew Origin. It Is A Variant Of Joseph Which Means "Jehovah Increases." If Celebrating Your Faith Is Important To You, Choosing A Biblical Name Like Josephus Is A Lovely Way To Welcome Your New Arrival. Alternatively, If You Want To Put A Different Spin On Names Like Joe Or Joseph, Calling Baby Josephus Is A Great Move. Flavius Josephus Was A Historian And Military Leader In The 1st Century AD, Adding Further To This Names Vintage Charm.