Filippo Reef is a reef that is asserted to be located in the Pacific Ocean at 05°30′S 151°50′W / 5.5°S 151.833°W / -5.5; -151.833Coordinates: 05°30′S 151°50′W / 5.5°S 151.833°W / -5.5; -151.833, 450 km east of Starbuck Island in the Line Islands, which was reported by the master of the Italian barque Filippo as having been seen on 28 June 1886. From an unidentified report dated 1926 of the breakers, it is estimated to have a least water depth of only 0.6 to 0.9 meters, and appeared to be about 1.6 km long northwest to southeast, and less in width.

However the only sighting referenced is on page 40 of http://permanent.access.gpo.gov/websites/pollux/pollux.nss.nima.mil/NAV_PUBS/SD/pub126/126sec02.pdf and shows a date of 1926. The topographic data supplied by http://www.gebco.net/ and accessible via http://www.wolframalpha.com/entities/undersea_features/filippo_reef/q1/il/vm/ however shows a sea depth of 3.3 miles. It is therefore likely that this 1926 report is an error, and that Filippo Reef is a phantom island, and that therefore any maps showing it are relying on the 1926 report, and are also in error.

Filippo Brunelleschi (Italian pronunciation: [fiˈlippo brunelˈleski]; 1377 – April 15, 1446) was one of the foremost architects and engineers of the Italian Renaissance. He is perhaps most famous for his studies of linear perspective and engineering the dome of the Florence Cathedral, but his accomplishments also include other architectural works, sculpture, mathematics, engineering and even ship design. His principal surviving works are to be found in Florence, Italy.

Little is known about the early life of Brunelleschi, the only sources being Antonio Manetti and Giorgio Vasari. According to these sources, Filippo's father was Brunellesco di Lippo, a lawyer, and his mother was Giuliana Spini. Filippo was the middle of their three children. The young Filippo was given a literary and mathematical education intended to enable him to follow in the footsteps of his father, a civil servant. Being artistically inclined, however, Filippo enrolled in the Arte della Seta, the silk merchants' Guild, which also included goldsmiths, metalworkers, and bronze workers. He became a master goldsmith in 1398. It was thus not a coincidence that his first important building commission, the Ospedale degli Innocenti, came from the guild to which he belonged.