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      <p class="heading">Billy, Jacques de
      
 <DL class="main_text">
<DT><B>1. Dates</B>
	<DD><I>Born:</I> Compiègne, France, 1602  	  
	<DD><I>Died:</I> France, 1679	 	  
	<DD><I>Dateinfo:</I> Dates Certain
	<DD><I>Lifespan:</I> 77

<DT><B>2. Father</B>
	<DD><I>Occupation:</I>  No Information
	<DD>No information on financial status.

<DT><B>3. Nationality</B>
	<DD><I>Birth:</I> Compieègne, France
	<DD><I>Career:</I> France
	<DD><I>Death:</I> France

<DT><B>4. Education</B>
	<DD><I>Schooling:</I> Religous Order, D.D.
	<DD>After finishing humanistic studies, entered Jesuit order, then studied theology.  I accept the equivalent of B.A.  As an ordained Jesuit who took all four vows, he would have completed a doctorate in theology.

<DT><B>5. Religion</B>
	<DD><I>Affiliation:</I> Catholic, Jesuit

<DT><B>6. Scientific Disciplines</B>
	<DD><I>Primary:</I>  Mathematics, Astronomy

<DT><B>7. Means of Support</B>
	<DD><I>Primary:</I>  Ecclesiastical Position
	<DD><I>Secondary:</I>  Schoolmaster
	<DD>1629-30, taught mathematics at Jesuit college at Pont à Mousson while a theology student.
	<DD>1631-33, taught mathematics at Jesuit college at Rheims. According to Humbert he taught also in the Jesuit college at Grenoble and was rector of Chalons, Langres, and Sens.
	<DD>Master of studies and professor of theology at the College de Dijon, taught mathematics privately.
	<DD>1665-68, Professor of Mathematics, College de Dijon.

<DT><B>8. Patronage</B>
	<DD><I>Type:</I>  Court Official
	<DD>He dedicated his Tabulae lodoicae, 1656, (note the name) to Louis XIV.

<DT><B>9. Technological Involvement</B>
	<DD><I>Types:</I>  None

<DT><B>10. Scientific Societies</B>
   <DD><I>Memberships:</I> None
	<DD>Connections: Taught Jacques Ozanam, Claude Gasper Bachet de Meziriac; corresponded with Fermat and Bachet.

<DT><B>Sources</B>
<OL>
	<LI>J.P. Niceron, Mémoires pour servir à a l'histoire des hommes illustres. . ., 40, 232-244.
	<LI>P.Humbert," Les Astronmers francais de 1610 à 1667," Société d'études scientifiques et archeéologiques de Draguignan, Mémoires, 63 (1942), pp.1-72.</OL>


<!--AUTHOR-->
<DT><I>Compiled by:</I>
	<DD>Richard S. Westfall
	<DD>Department of History and Philosophy of Science
	<DD>Indiana University
</DL>
	  
      <p class="sources"> Note: the creators of the Galileo Project and this catalogue 
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