discharge my promise

[Mike Hussey]

John speaks to Fanny after he made to his father Mr Dashwood for distributing money to stepmother, his mother and sisters:

John: Dearest, I mean to give them £3,000. The interest will provide them with a little extra income. Such a gift will certainly discharge my promise to my father.

What does "discharge my promise" mean?
Does it mean break the promise? My friend told it means complete the promise, I am confused

Source: Sense and Sensibility 1995

 

[tedmc]

No, it means "to fulfill or honour his promise".

 

[Rover_KE]

Mike, Sense and Sensibility, the novel by Jane Austen, was written in 1811. In future questions about it, please quote that date rather than the date of any subsequent screen adaptations of the story. Please also mention Jane Austen's name in your citation – her descendants will appreciate it.

I see you are asking similar questions on WordReference forums. That's fine, but please continue to refrain from asking the same questions both here and there.;-)

 

[GoesStation]

John speaks to Fanny after he made to his father Mr Dashwood for distributing money to stepmother, his mother and sisters ….

The underlined part seems to be missing something. I can't guess what you're trying to say.