In the Bara to Houkan (Roses and Coronets) series:

1) Ai Yue ni (Because of Love) / Rory
A man most wanted -- Rory O'Neil was hunted by every soldier who wore an English uniform, but that would not stop his quest for revenge.

A man most despised -- He was hated by those who knew him as the Blackhearted O'Neil. But to those who believed in his cause, he was the only warrior brave enough to save them.

A man most loved -- AnnaClaire Thompson knew the first time she witnessed his passion that Rory was the man who would lay claim to her heart. But would the driven Rory ever return her love? [Taken from FictionDB:]

2) Fukushuu no Shisha (Messenger of Revenge) / Conor
An Honorable Rogue... Gifted with a smooth tongue and a sharp blade, Conor O'Neil sought to avenge the hardships his people had endured. But while he played a risky game of politics and power, Emma Vaughn played an even riskier game still. An Innocent Seductress... Emma was shy and innocent, until she arrived at the queen's court with one duty-filled goal - to turn Conor O'Neil's attentions from intrigue to pleasure. But though each flirtatious caress brought her closer to success...Emma was beginning to wonder on which side her true loyalties lay. [Taken from FictionDB:]

3) Kono Inoichi Hateru made (To End This Life) / Briana
A family driven by destiny!

Briana O'Neil -- Regaled with tales of her brothers' adventures, Briana hoped to follow in their footsteps and fight for the freedom of their homeland. But while she'd dreamed of joining the fray, she'd never considered that she herself would ever fall victim to an enemy's sword...

Keane O'mara -- When embittered Keane O'Mara found the wounded Briana, he thought the fight for freedom had claimed another innocent, but her remarkable recovery lit a spark of hope deep within him. And he knew that with this woman by his side they would soon regain what was rightfully theirs! [Taken from FictionDB:]

Based on "The O'Neil Saga" by Ruth Langan