The Avenging Maid — Janis Susan May

"Who is this scullery maid with the manners of a duchess?" The question was plainly written on the face of Geraint Catton, the young history master at St. Gregory's school. But Lady Phillipa Stanhope-Fredericks, alias "Maggie,' couldn't tell him the truth.
Not yet....

Not until she had discovered the real story behind the mysterious death of her young brother in this forbidding, evil place. Little did she know that Lord Paul Geraint Ludlow had his own reasons for being incognito ... or that the love that blossomed at St. Gregory's would face its greatest challenge in the scheming London ton, where the secrets that had brought them together would begin to tear them apart!

Hero: Lord Paul Geraint Ludlow
Heroine: Lady Phillipa Stanhope-Fredericks (Maggie)