Waynflete Professorship was created in 1857.
Yes. It is a very highbrow word for 'retired', usually used for university professors and such. Only if a professor would be recalled from retirement and re-installed in his old job at his old University he would lose the title. But if he would - after retirement from say Harvard - be offered a professorship elsewhere, he would still be "emeritus professor, Harvard University".
The wealthy alumnus bequeathed enough money to fund a professorship.
Lord Almoner's Professorship of Arabic ended in 1933.
Lord Almoner's Professorship of Arabic was created in 1724.
Thomas A. Scott Professorship of Mathematics was created in 1881.
Winton Professorship of the Public Understanding of Risk was created in 2007.
Herchel Smith Professorship of Pure Mathematics was created in 2004.
Churchill Professorship of Mathematics for Operational Research was created in 1966.
Simonyi Professorship for the Public Understanding of Science was created in 1995.
The plural is chairmen emeritus.
Pastor Emeritus is correct. The title first, then the "disclaimer" stating the retirement.