In these letters to Lady Burlington, General Mostyn writes concerning: his return from Glasgow where he has visited some of the officers quartered there; the news that his brother has been married; the news he shared with Lady Burlington in town; writing his letter in the guard room (CS1/208/0);
his sorrow that Lady Burlington is so ill; being in Edinburgh with an order from the regiment to raise men of the company; his health being affected by a cold and fever; his gladness that Lady Burlington approves of his letter to his father which he had doubts about; his bad habit of not writing to people like Lady Nottingham when he should; his intention to write to Lord Winchelsea; his gratefulness for Lady Burlington's advice to him; his compliments to Lord Burlington and his failure to get a horse as his Lordship wants (CS1/208/1);
his new commission as commander of one of the companies in the regiment which he thanks Lady Burlington for, acknowledging her influence in his appointment; his hopes that her time in Bath will improve her health;
Mr Wade being on the road to London; his intention to leave Berwick as there is little reason to stay and the brigadier has given him leave; passing on Lady Burlington's apologies for not writing to the brigadier and his intention to visit the brigadier in Huntingdonshire on his way through; his intention to see Lady Burlington when he is in London and give her an account of his affairs; not having heard any news of Lord W, a letter from his sister Essex (likely sent without Sir Roger's knowledge) and a letter from Harry (CS1/208/3);
his gladness to receive news of Lady Burlington's health improving at Tunbridge; Lord Burlington lending him a horse; his tiredness for Lydbury and his gladness to see the doctor who came on the horse but no one else; news that Lord Bowmont is well;
his safe arrival and his plan to travel onward to Bruges and Ghent; a post script that in his absence he deputes Mr Kent to play at "Splish Splash" with Wick;
his thanks for being allowed to stay at Burlington House when he could not afford his lodgings; his need for his own lodgings now he has more people visiting him on regimental and other business.