Mina Stinson Crandon, better known as Margery the Medium was born in Canada in 1888. She became famous as a Boston Medium who came up against Harry Houdini. Controversy still exists today as to exactly what took place. Margery claimed Houdini tried to sabotage her and did things to make her appear fake. He denied it.
However, some claim that Jim Collins admitted after Houdini had died that he placed a ruler in the 'Margery Box' to try and make it appear that Margery was a fake. On top of that he claimed Houdini told him to do it. But I don't know if Jim Collins actually said this. It's terribly out of character for him.
Margery died on November 1st , 1941 in Boston. She is buried in the Forest Hills Cemetery in Boston. Below is a map showing where she is buried in the cemetery. X marks the spot, approximately.
Above grave photo courtesy of Norman Bigelow.