instruction: What was the first name of Thomas Attewell's brother and cousin?
context: Thomas Attewell (7 November 1869 – 6 July 1937) was an English first-class cricketer. Attewell was a right-handed batsman who bowled right-arm medium pace. He was born at Keyworth, Nottinghamshire.
  
  His brother William played first-class cricket for Nottinghamshire and the Marylebone Cricket Club, as well as Test cricket for England. His cousin Walter Attewell played first-class cricket for Nottinghamshire.
response: William and Walter