The Cross And The Flame — Roberta Grieve

While the Great Plague rages through London, Hester dreams of her sailor sweetheart Jonathan, despite being promised in marriage to her father's friend - the odious Thomas Latham. The deaths of her mother and baby brother bring guilty relief when the wedding is postponed. Then Jonathan returns to the news that Hester has died in the plague. Will he discover the deception before she is forced to marry a man who has no place in her heart?