The Rebel Black Dot Society - The House of Winter
All of the Winters have Roman names. The tradition was started by Scipio Winter's great-grandfather James Winter, who named his two sons after Julius Caesar and Pompey. I don't have the entire family tree worked out, but here's what I have. Titles in italics indicate relation to Scipio; underlined names are those used as "first names."

James Winter, great-grandfather - deceased

{his sons}
Gaius Julius Caesar Winter, grandfather
Gnaeus Pompeius Magnus "Pompey" Winter, great-uncle

{Caesar's sons}
Marcus Cocceius Nerva Winter, uncle
Marcus Ulpius Nerva Trajanus "Trajan" Winter, uncle
Publius Aelius Trajanus Hadrianus "Hadrian" Winter, uncle - deceased
Titus Aurelius Fulvius Boionius Arrius Antoninus Pius Winter, father
Marcus Aurelius Antoninus Augustus Winter, uncle

{Antoninus Pius's children}
Livia Antonina Winter, M.D., sister
Marcus Portius Cato Winter, brother
Publius Cornelius Scipio Africanus Winter, himself
Julia Antonina Winter, sister
Portia Antonina Winter, sister
Agrippina Antonina Winter, sister

{Marcus Aurelius's children}
Aurelia Augusta Winter, cousin
Lucius Septimius Severus Winter, cousin

One of the reasons Scipio's mother (as yet unnamed) divorced his father, Antoninus Pius, was she felt smothered by the extended Winter family, all of whom live near each other. Antoninus Pius is very close to his father, uncle, three surviving brothers, and cousins (I'm sure Pompey had kids, I just haven't invented them yet), and dotes on his six children, custody of whom he retained after the divorce.

Family, specifically sibling relationships, plays an important part in nearly all my work.