Final answer:
The exact number of witnesses who saw a busy headed man near the house on the night of the murder cannot be determined based on the provided information.
Step-by-step explanation:
Based on the provided information, it is difficult to determine the exact number of witnesses who saw a busy headed man near the house on the night of the murder. The testimonies mentioned in the text do not provide a specific count or identification of the witnesses. Therefore, without further evidence or details, it is not possible to provide an accurate number of witnesses.