Ranconnier, Jacques a French Jesuit missionary, was born in 1600 in the county of Bourgogne, entered the novitiate of the Jesuits at the age of nineteen in Malines, and in 1625 went into the missionary work in Paraguay. He labored very successfully for sevenr years among the Itatines, whom he converted to Christianity, such as he had to offer, and died among this new people of the Gospel about 1640. He wrote frequent reports of the progress of his work in Paraguay, which are valuable contributions to the history of that South American coultry. See Sothwell, Bibl. Script. Soc. Jesu, p. 209; Charlevoix, Hist. de Paraguay, liv. 8. Hoefer, Nouv. Biog. Generale, s.v. SEE PARAGUAY.