Ivor Grattan-Guinness, 1941-2014

The noted historian of mathematics reportedly
died on December 12, 2014.

"His forthright style of operating meant
he could occasionally ruffle academic feathers."
— An acquaintance quoted today in
    Times Higher Education 

See a quote from Grattan-Guinness in this 
journal on April 19, 2004 ("Cartesian Theatre").