She drank poison.
Gertrude Appleyard died in 1917.
Gertrude Bloede died in 1905.
Gertrude Johnson died in 1973.
Gertrude Hartland died in 1954.
Gertrude Aretz died in 1938.
Gertrude of Aldenberg died in 1297.
Gertrude Morgan died in 1980.
Gertrude Jekyll died in 1932.
Gertrude Harrison died in 1938.
Gertrude Elles died in 1960.
Gertrude Neumark died in 2010.
Gertrude Cosgrove died in 1962.