I was to have fought an American named Murphy at the National next Monday

“I was to have fought an American named Murphy at the National next Monday, but I ain’t going to now, not if they come to me on their bended knees.
Not if the King of England come to me on his bended knees.”
(a) Who is speaking to whom?
(b) Which phrase in the extract means the same as ‘requested’?
© He was adamant not to fight and it is indicated when he says that…

(a) Bill Bramble is speaking to his son, Harold.
(b) The phrase is ‘come on their bended knees’.
© he would not fight even if he is approached on bended knees by the King of England