(written from a Production point of view)
Jon Michael Picard was a French Human that lived during the 16th century. He was a descendant of Françoise de Picard and Madame de La Barre, and a distant ancestor of the Picard family, and Captain Jean-Luc Picard.
The article containing this information was included in the Picard family album during the filming of Star Trek Generations. However, the information is non-canon as the article was never seen on-screen.