Read the following paragraph and determine if the hypothesis is true:

Edward Stafford, 4th Baron Stafford (1572 16 September 1625) was the son of Edward Stafford, 3rd Baron Stafford and Mary Stanley, daughter of Edward Stanley, 3rd Earl of Derby and Dorothy Howard. He became 4th Baron Stafford on the death of his father in 1603

Hypothesis: Edward Stafford's father died in his sleep.
It's impossible to say