It Was War!
When Justin, Lord Amis, returned from abroad, he learned that his father had married a penniless widow in his absence, and inherited her unruly brood of children, to boot! Justin was determined to expose the family for what they were - unprincipled upstarts who had not right to any part of his father's wealth. Then he met Ginnie, the eldest daughter, and things only got worse.
He was certain she was masterminding the flanking attacks by her siblings, yet every time he was confronted by her beauty, he seemed incapable of routing her. Desperate, he decided to invite his fiancée, the haughty Lady Anabel, and all her tonnish friends to a house party to show his unwanted new family they had no place in Society. It was time for a frontal assault!
Harlequin Regency Romance - # 108