Thanks for another interesting article. I've always been curious about that cemetery and have been watching its recent restoration with interest.
There are actually a number of neighborhoods between South Riverside and Lakewood. The legal subdivisions encompassed by this article include parts of South Riverside, the William Craig Grant, and Brookwood Terrace, among others. Colonial Terrace and Ridgewood are between Brookwood Terrace and Lakewood.
Most folks who live in "South Riverside" would refer to their neighborhood as San Marco.