Roman Demigod
Roman demigods, such as Jason Grace, are a subset of demigods who train at Camp Jupiter, which is located near San Francisco. They are born when a god conceives a child with a mortal while in their Roman aspect. They naturally speak and read Latin, as opposed to Ancient Greek to Greek demigods, and are trained in the style of the Roman legions instead of Greek warfare. Roman demigods often make it to adulthood and can live in New Rome and are able to start families once they are old enough to.
Much like their Greek counterparts, children of mortals and Roman Titans are considered demigods; however, they are unofficially coined with the term 'demititan' instead, similarly with children of Primordials and nymphs being coined 'demiprimordials' and 'deminymphs' respectively.
Roman demigods start their lives at the Wolf House. It is there that Lupa decides if the child is strong or not. If she believes they are, she will spend time training the demigod skills that they will need to survive. Should the demigod make it through the training alive, Lupa will instruct them to follow their instincts to Camp Jupiter, home of the Roman Legion. However, if Lupa doesn't believe the demigod is strong enough or they show fear, it is said that they will be eaten by her and her wolves. Upon making it to Camp Jupiter, a praetor will decide is the demigod can join the Legion before sending them to have their augury read. If it is favourable, the demigod can then officially join the Legion. Like the Greek demigods, they were unaware of the existence of their counterparts at Camp Half-Blood in Long Island, but some demigods like Octavian had their suspicions.
This is due to a conflict between the two groups back during the American Civil War (and likely many other wars before), after which the gods manipulated the Mist as tightly as possible to stop the two groups from ever meeting each other again, although there have been some close calls. The head of their camp are the camp's two Praetors, who are elected demigods from the camp.
It is stated that some demigods, such as Janice and Claudia, are children of former legionnaires and gods, making them both demigods and legacies.