A strong emission line at 6703Åhas been detected in the optical spectrum for the host galaxy (R=23.1) of the radio source RC J0311+0507 (4C+04.11). This radio galaxy, with a spectral index of 1.31 in the frequency range 365-4850 MHz, is one of the ultrasteep spectrum objects from the deep survey of a sky strip conducted with RATAN-600 in 1980RATAN-600 in -1981 We present arguments in favor of the identification of this line with Lyα at redshift z = 4.514. In this case, the object belongs to the group of extremely distant radio galaxies of ultrahigh radio luminosity (P 1400 = 1.3 × 10 29 W Hz −1 ). Such power can be provided only by a fairly massive black hole (∼ 10 9 M ⊙ ) that formed in a time less than the age of the Universe at the observed z (1.3 Gyr) or had a primordial origin.

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