At one time, the Wintrish blood had grown thin and nearly sterile. The Lord Wintrish of the time, desperate for an heir, contracted with a Fae Witch to restore his family's fertility, which she did by infusing him with a Spirit of the First World. The Wintrish Line was saved, and picked up an amazing facility with animals as a side effect...all in all, an amazing bargain with no downside.
Three generations ago, the price became evident. As the power of diabolists rose, something in the Wintrish blood was triggered; the Green rebelled against what was happening, and Wintrish children were born...different. Some had distinctly elven features, and it was at first assumed that there had been an affair that was quickly hushed up, but others were not so subtle in their deformity. Green skin, leafy hair, animalistic features such as claws or digitigrade limbs, these were the curses of the first group of Wintrish children, many of whom were killed outright before anyone could discover their secret.
The Wintrish sterility was now an issue of actions, not nature. Unable to compete in the increasingly vicious social environment, and terrified that their secret would be outed, the Wintrish house turned in on itself.
Whether by accident or design, the Green adapted. The last of the Wintrish line, Pavo and Solan, have no noticeable physical deformities, but both have a burning desire to stem the tide of the Asmodean theocracy. Solan, disgusted with humanity in general, is an Urban Ranger, with Humans as his favored enemy. He prowls the city killing those he has judged to be damaging, and arranging for it to
look like the blight did them in.
Pavo, on the other hand, has decided that it need not be incompatible to exist in the Aristocracy and serve the drives of the Green. He has decided to rebuild his lost house, to make it a force that can ameliorate the excesses of the diabolists. And if he enjoys himself in the process, that's fine too, right? He is a member of the Aristocracy, after all, and he deserves the finer things in life.
Not stupid, Pavo has developed a separate identity that he uses to placate the brightness that roils within him. LeVash operates in the twilight (at least until he can survive the night), defending the weak (and incidently causing problems for those families he sees as political rivals). How long he can maintain his two-tiered lifestyle in the face of increasing drives to do something dramatic.