Strictly speaking, this isn't Los Angeles. It's Rancho Cucamonga, which is just outside the county line by ten miles or so. One of those places where streets and cul-de-sacs often have the same name.
Same name. You know, usually when the name is the same, so is the spelling. For instance, Cartilla and Cartilla, not Cartilla and Cartilia.
Most be one of those synnannymmie things I remember from 4th grade.