Simplify the following text for a Grade 10 native English-speaking person.
Original: Relations between John and his father do not seem to have been amicable ; according to a statement made by John Singleton , in which he referred to Sir John as his `` old Master '' , Sir John refused even to pass his son 's house if he could avoid it , and believed that Jane would probably kill her husband .
Simplified: Relations father and son were not polite ; John Singleton , said that the father would not even go passed his son 's house if he could keep clear of it , and believed that Jane would probably kill her husband .