Christina was successfully adopted in 1939, Christopher in 1943 and the twins four years later in 1947. ... ' At night she says her brother Christopher was strapped into bed with a canvas harness to prevent him from walking to the toilet.

What happened to Christopher in Mommie Dearest?

Crawford adopted Christina in 1940, and died of a heart attack in 1977. Christina's younger brother, Christopher, died of cancer in 2006.

Did Joan Crawford tie her son to the bed?

Christopher Crawford, depicted in the movie as having been strapped into his bed by his mother -- the film doesn't explain that this was Joan's attempt to curb his sleepwalking -- seems to be the only one of Joan's four children who felt "Mommie Dearest" accurately portrayed his childhood.