Joseph-François Lambert, the "Duke of Imerina" (1824–1873) was a French adventurer, businessman, and diplomat who fathered the Lambert Charter.

Ranavalona I, also known as Ranavalo-Manjaka I and the “Mad Monarch of Madagascar” was sovereign of the Kingdom of Madagascar from 1828 to 1861. After positioning herself as queen following the death of her young husband, Radama I, Ranavalona pursued a policy of isolationism and self-sufficiency, reducing economic and political ties with European powers, repelling a French attack on the coastal town of Foulpointe, and taking vigorous measures to eradicate the small but growing Malagasy Christian movement initiated under Radama I by members of the London Missionary Society.