While it's not a place within the novel proper, "Deronda" is a spanish name that does mean "Of Ronda" or "from Ronda." Fittingly, Spain actually has quite an illustrious history concerning the history of Judaism and Jews, once having boasted one of the largest jewish populations in the world piror to the late fifteenth century. One of the main Jewish ethnicities(think Ashkenazi, Mizrahi, etc) is Sephardic which essentially translates to "Hispanic" or "Spanish." That said, Spain also used to be majority Muslim population and there isn't half as large a Jewish population as there once was. This is largely because of the signing of the 1492 Alhambra Decree which ordered the exile of all practicing jewish persons from the country this is probably why there are large sephardic populations outside of Portugal and Spain. Much in the same way, is our hero orphaned from his heritage. Even more fittingly, the largest Sephardic community in the world exists in Israel.
Diez, Maria Sanchez. “Mapped: Where Sephardic Jews Live after They Were Kicked out of Spain 500 Years Ago.” Quartz, Quartz, qz.com/427032/mapped-where-sephardic-jews-live-after-they-were-kicked-out-of-spain-500-years-ago/.
Nayler, Mark. “7 Things to Know Before Visiting Ronda.” Culture Trip, The Culture Trip, 13 Feb. 2018, theculturetrip.com/europe/spain/articles/7-things-to-know-before-visiting-ronda/.