Flying to Heaven — Anne Holman

In 1785, Susan Woodford and her invalid mother become penniless and travel to Bath for sanctuary. The flippant balloonist they meet en route is Tom, the Earl of Dearham. They lodge with his Aunt Mary, and Susan is dismayed to learn that they are his dependants. But when she goes up in his balloon and it is swept away to Wales, they fall in love on the dangerous trek home with drovers.