In a review of a book by Ferdinand Gonseth in the Spring-Summer 2006 (Volume XI, Issue 1) of the HOPOS Newsletter it is said that Gonseth was the
"successor on Jerome's (sic) Franel's chair for Mathematics in French language at the ETH"
1) Was this a chair that Franel held or was it a chair Franel endowed? If the former, does the chair have a name?
2) What is the nature of a chair "for Mathematics in the French language"? Is it a history of French mathematics chair or is it a chair for a mathematician that writes in French?
Thanks for any insight.