Kotto said he learned that his father's family was royal in adult life while studying his family's lineage, and said he is also a descendant of Queen Victoria. According to Kotto, his father was an observant Jew who spoke Hebrew. Kotto's mother, who was of Panamanian descent, converted to Judaism before marrying his father. Kotto claims that his great-grandfather, whom he names "King Alexander Bell", ruled the Douala region of Cameroon in the late-19th century and was also a practicing Jew. Kotto has said that his paternal family originated from Israel many centuries ago, migrating to Egypt and then Cameroon, and have been African Jews for many generations. His claim of being a descendant of Queen Victoria has been denied by the Buckingham Palace press office.