Expression idiomatique en anglais : come what may

• No matter what may happen
• To be sure of going ahead in a particular situation even if all the odds are not in favour
• To resolve on doing (something) or to ignore the circumstances in order to get something done

• The girl has decided to marry him come what may. She will proceed even if her entire family is against her decision.
• I have decided to go to London to complete my higher education come what may.
• She has promised her mother that she will pass the exam come what may this year.
• We will be vacationing outside the country this year come what may.
• My cousin is going to go to the party come what may.
• She got the assignment and will not finish it come what may.
• I am going to board that train come what may.
• It’s good to know that, come what may, our job is safe.

The phrase was used in the French language in the early 1300’s as « avalze que valze » which means « let it avail what it may, come what may ». Skakespeare made it popular by using it in his work ‘Macbeth’ in the year 1605. By the 1800s it was a popular US phrase just as much as it belonged to European English.

Source: http://idioms.in/come-what-may/