He was very ill at that time, but he would go.
His income was still small, but she would marry him.
At last she put her arms round the top, as far as they would go.
Are these sentences all barely English? (Please see the following meaning of 'would' from OALD. According to OLAD, 'would' can't be used to show that somebody/something was willing or insisted to do something.)
one meaning of 'would': (would not do something) used to show that somebody/something was not willing or refused to do something
ex1) She wouldn't change it, even though she knew it was wrong.
ex2) My car wouldn't start this morning.
(from Oxford Advanced Learner's Dictionary)