Père Simplicien O.A.D., (1683–1759) was a French genealogist.

A friar

Friar

A friar is a member of one of the mendicant orders.-Friars and monks:...

 of the order of the barefoot Augustinians at the Couvent des Petits-Pères in Paris, his original name as a layman was Paul Lucas. He worked with Father Ange de Sainte Rosalie on the revision of the monumental Histoire généalogique de la maison royale de France of Father Anselme

Père Anselme

Père Anselme was a French genealogist.He was born in Paris in 1625. As a layman his name was Pierre Guibours...

 after the death of editor of the second edition, Honoré Caille du Fourny

Honoré Caille du Fourny

Honoré Caille, seigneur du Fourny was a French genealogist.An examiner at the Court of Accounts in Paris, he collected the papers of Père Anselme, and in 1712 published a new edition of Anselme's great work, the Histoire généalogique de la maison royale de France, et des grands officiers de la...

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It was Father Simplicien who published the revised work in 1726, following the sudden death of Father Ange de Sainte-Rosalie.