| Authorised form of name | Bullialdus; Ismael (1605 - 1694); astronomer and mathematician |
| Other forms of surname | Boulliau |
| Dates | 1605 - 1694 |
| Nationality | French |
| Place of birth | Loudun, France, Europe |
| Date of birth | 28 September 1605 |
| Place of death | Abbaye St-Victor, Paris, France, Europe |
| Date of death | 25 November 1694 |
| Occupation | Clergyman, Roman Catholic; Diplomat |
| Research field | Mathematics |
| Astronomy |
| Activity | Education:
Loudun; Poitiers; Paris
Career:
Travelled in Italy, Germany, Poland and to the Levant, as ambassador of King Casimir; converted to Roman Catholicism (1626); worked as a librarian with the brothers Dupuy at the Bibliothque du roi (1632-1662); secretary to the French ambassador of Holland (1662-1666); librarian at Collge de Laon (1666); published multiple works on astronomy
|
| Membership category | Fellow |
| Date of election | 04/04/1667 |
| Age at election | 66 |
| Proposer | Henry Oldenburg |
| Other Royal Society activity | Acted as an occasional correspondent, in particular on astronomical observations and tables (1670s) |
| Relationships | Parents: Ismael Boulliau and Susanna Motet |
| PublishedWorks | RCN: 30853
RCN: 31934
RCN: R64842
RCN: 30854
RCN: 30855
RCN: 30856
RCN: 30857
RCN: 30858 |
| OtherInfo | Bullialdus was considered one of the most noted astronomers of his generation and enjoyed lifelong friendships with Pierre Gassendi, Marin Mersenne, and maintained correspondence with Johannes Hevelius (FRS 1664), Henry Oldenburg (FRS 1663), and Christian Huygens (FRS 1663). He was heavily involved in the correspondence network 'Republic of Letters', many letters of which survive at the National Library in France. His most important work is considered to be 'Astronomia philolaica' (1645) on planetary systems. Although he enjoyed a good reputation as an astronomer, his theories, including one of a new cosmology which went against Kepler's theories, were critiqued by some fellow astronomers. |
| Related images | Discover a selection of related images in our picture library |
| Image | 
|
| Source | Sources:
Bulloch's Roll; DSB; Biographie Universelle; Hunter; Biographical Encyclopedia of Astronomers
References:
Da Costa Andrade, E N. 1963. 'Samuel Pepys and the Royal Society', in Notes and Records, vol. 18, pp. 82-93 |
| Virtual International Authority File | http://viaf.org/viaf/29630623 |
| Code | NA5773 |
Archives associated with this Fellow
| RefNo | Title | Date |
| RBO/4/37 | 'Mons Bullialdus his Calculation of the places of the Sun and Moon on April 22 1671 from the Philolaick Tables' | 1671 |
| RBO/4/36 | 'Mons Bullialdus's Calculation of the Lunar Eclipse of September 18 1671 from the Philolaic Tables' | 1671 |
| LBO/2/8 | Copy letter from Ismail Bullialdus to Henry Oldenburg | 16 May 1667 |
| LBO/2/5 | Copy letter from Henry Oldenburg to Ismail Bullialdus | 22 April 1667 |
| LBO/2/9 | Copy letter of Ismael Bullialdus to the Royal Society | 16 May 1667 |
| LBO/7/99 | Copy letter from Henry Oldenburg, London, to Ismail Bullialdus | 18 February 1675 |
| EL/B1/123 | Letter, from Ismael Boulliaud to the Royal Society, dated at Paris | 16 May 1667 |
| CLP/4i/18/1 | Manuscript, concerning an astronomical observation on 4 March | [c17th Century] |
| CLP/8i/27/1 | Manuscript, computation of the Sun and Moon from the Philolaick tables by Ismael Bullialdus | 1671 |
| CLP/8i/27/2 | Diagram and philolaic tables by Ismael Bullialdus | 1671 |
| CLP/4i/18 | Paper, concerning an astronomical observation on 4 March | [1661-1670] |
| CLP/8i/27 | Paper, computation of the Sun and Moon from the Philolaick tables by Ismael Bullialdus | 1671 |
| CLP/8i/17 | Paper, 'Ismaelis Bullialdi observationes factae anno 1667 circa nebulosam in cingulo andromedae, et stellam mirabilem in collo ceti' [Observations of nebula in the constellation Andromeda and stars in the neck of the constellation Cetus seen in 1667] by Ismael Bulialdus | 1667 |
| CLP/4i/18/2 | Drawing, Mira of Cetus | [c17th Century] |
| EL/B1/125 | Letter, from Ismael Boulliaud to Henry Oldenburg, dated at Paris | 17 July 1675 |
| EL/B1/122 | Letter, from Ismael Boulliaud to Henry Oldenburg, dated at Paris | 16 May 1667 |
| EL/B1/124 | Letter, from Ismael Boulliaud to Henry Oldenburg, dated at Paris | 7 February 1675 |