Deravenel family trilogy

At the age of thirty-three, Edward Deravenel, having survived harrowing years of betrayal, threats from ruthless enemies, countless lovers, and a war that ravaged his country, is finally king of his company. It's 1918, an influenza pandemic is sweeping the country, and Edward has a family and a business to protect. He must thread his way between his loyal brother, Richard, and his treacherous middle brother, George, an alcoholic bent on self-destruction