 Gero died in 976 and was buried in the Cathedral of Cologne, where he left as his legacy the Romanesque Gero Cross, one of the oldest large crucifixes in Germany and a milestone of Western Christian iconography.The Gero Codex was probably drawn up in 969 at the behest of Archbishop Gero at the scriptorium of Reichenau Abbey.The pericope contains an evangeliary of the liturgical year to find a use in mass services.