  We recently constructed the G4Jy-3CRE, a catalog of extragalactic radio
sources based on the GLEAM 4-Jy (G4Jy) sample, with the aim of increasing the
number of powerful radio galaxies and quasars with similar selection criteria
to those of the revised release of the Third Cambridge catalog (3CR). The
G4Jy-3CRE consists of a total of 264 radio sources mainly visible from the
Southern Hemisphere. Here, we present an initial X-ray analysis of 89 G4Jy-3CRE
radio sources with archival X- ray observations from the Neil Gehrels Swift
Observatory. We reduced a total of 615 Swift observations, for about 0.89 Msec
of integrated exposure time, we found X-ray counterparts for 61 radio sources
belonging to the G4Jy-3CRE, 11 of them showing extended X-ray emission. The
remaining 28 sources do not show any X-ray emission associated with their radio
cores. Our analysis demonstrates that X-ray snapshot observations, even if
lacking uniform exposure times, as those carried out with Swift, allow us to
(i) verify and/or re ne the host galaxy identi cation; (ii) discover the
extended X-ray emission around radio galaxies of the intracluster medium when
harbored in galaxy clusters, as the case of G4Jy 1518 and G4Jy 1664, and (iii)
detect X-ray radiation arising from their radio lobes, as for G4Jy 1863.
