Read the following premise and answer if the hypothesis is true.
Edward Stafford, 3rd Baron Stafford (7 January 1535 – 18 October 1603) was the second surviving son of Henry Stafford, 1st Baron Stafford and Ursula Pole, the younger brother of Henry Stafford, 2nd Baron Stafford. He served in Parliament for Stafford and succeeded his brother to the barony in 1566.
Hypothesis: 1st Baron Henry Stafford and Ursula Pole had a single son.. Is the answer "Yes", "No", or "It's impossible to say"? Respond with only the answer and no additional text.
No
It's impossible to say based on the given information. The hypothesis assumes that Edward Stafford was the only son of Henry Stafford and Ursula