I know there's a book out about her (it is fiction so it will probably tell the tale). It's available at witchbonney.com or thepentacle.net. Hope that helps!
The address of the Bonney Lake Library is: 18501 90Th Street East, Bonney Lake, 98390 M
Margery Bonney Erskine's birth name is Ada Margery Bonney.
Wayne Bonney was born in 1953.
Charles Bonney was born in 1813.
Charles Bonney died in 1897.
Henry Bonney died in 1862.
Maude Bonney was born in 1897.
Maude Bonney died in 1994.
Mary Bonney was born in 1816.
Mary Bonney died in 1900.
Simon Bonney was born in 1961.
Raymond Bonney was born in 1892.