Black Falcon's Lady — Kimberly Cates

Formerly published by Berkley Books as NIGHTWYLDE~

An unloved English heiress...
When shy Maryssa Wylder refuses an arranged marriage, her father exiles her to his isolated holdings in Ireland, a hell he claims is populated by savages eager to slit English throats. On her journey, she is robbed by the Black Falcon, an Irish highwayman who curses all with the Wylder name. A brigand he may be, yet she can't forget the way he looks at her -- his dangerous passion piercing her lonely heart.

A dispossessed Irish prince...
Tade Kilcannon has every right to hate the Wylders. Though his ancestors were Irish kings, the English have stolen his birthright, giving it to Bainbridge Wylder, a ruthless English overlord who drives the Irish crofters from their homes. Though the people of the glen think Tade Kilcannon is a rakehell, in truth, he is the Black Falcon, a masked patriot who bedevils the English. But this rogue's heart is untouched until Maryssa Wylder saves his family from marauding soldiers.

A love worth defying two worlds...
Maryssa blossoms because of Tade's tenderness, but he knows that to love the English daughter of his family's great enemy is impossible. Then disaster strikes the glen, throwing Tade's fate and the future of those he protects into Maryssa's hands. Maryssa faces a heart-wrenching choice, one which may cost her the very life of the man she loves.

Celtic Rogues series:

1. THE BLACK FALCON'S LADY
2. HER MAGIC TOUCH
3. BRIAR ROSE
4. STEALING HEAVEN
5. LILY FAIR

Colleen's Fire series:
1. GATHER THE STARS
2. ANGEL'S FALL
3. CROWN OF DREAMS
4. CROWN OF MIST (prequel)