Likewise, the stretch of "E 15th St." in Brooklyn is actually named "Marlborough Rd." on the ground in the stretch where #315 is located: https://maps.google.co

Likewise, the stretch of "E 15th St." in Brooklyn is actually named "Marlborough Rd." on the ground in the stretch where #315 is located: https://maps.google.com/maps?q=315+E+15th+St,+Flatbush+-+Ditmas+Park,+New+York,+NY&hl=en&ll=40.641141,-73.964413&spn=0.00556,0.011319&sll=40.641638,-73.952494&sspn=0.044483,0.090551&oq=315+e+15th+st+flatbush+&gl=us&hnear=315+15th+St,+Brooklyn,+Kings,+New+York+11215&t=m&z=17&layer=c&cbll=40.64122,-73.964431&panoid=aZqAgwpPE-FX0xIFYhHMWw&cbp=12,206.68,,2,-7.76 https://maps.google.com/maps?q=315+E+15th+St,+Flatbush+-+Dit... It does look like the city understands the alternate name, not that that'd help you when you're out looking at street signs: http://gis.nyc.gov/dcp/at/f1.jsp?submit=true&house_nbr=315&street_name=e+15th+st&boro=3 http://gis.nyc.gov/dcp/at/f1.jsp?submit=true&house_nbr=3...