Albus Dumbledore was killed in Harry Potter and the Half-Blood Prince. He was killed by Severus Snape. The job originally fell upon Draco Malfoy, but he was unable to kill him.
There is not Professor Mergonagor in the Harry Potter series. Professor McGonagall does not die in book 7
No one dies in Professor Layton.
Professor McGonagall doesn't die during the series.
John Malcolm - professor - died in 1954.
Felix Adler - professor - died in 1933.
Richard Lawson - professor - died in 1971.
Professor Louis Grant died in 1993
John Dickie - professor - died in 1942.
William Smyth - professor - died in 1868.
Professor Mike Donovan died in 1918.
Georgios Kalafatis - professor - died in 1720.
Charles Black - professor - died in 2001.