Legge was again returned unopposed for the corporation borough of Banbury on the interest of his kinsman the 5th earl of Guildford at the general election of 1820, when a murderous stone-throwing mob besieged the town hall, and he ‘escaped with his life’ only by ‘being dragged over the top of some of the houses and let down into the inn yard, from whence he made his escape in the disguise of a post boy’.
The following year he made what was evidently an unsuitable marriage, at least in the eyes of his mother. In January 1829 George Fortescue* told a mutual friend:
I had a letter ... from Heneage Legge telling me that his mother had at last allowed him to ‘declare his marriage, explaining his history to his friends and nearest relations, with an understanding that the subject should not be talked about or the marriage supposed to be acknowledged’ ... He has too at last been made acquainted with his wife’s name and genealogy, and though he cannot divulge it, seems to derive comfort from finding it respectable and ancient beyond what from former conversations with me, he appeared to expect.
Soon afterwards Fortescue reported that at a dinner at their club Legge ‘did not quite look as he used to in a merry party of friends and was more silent than ever’.
