The former editor of The Observer, David Astor, was a man with little time for convention. He was suspicious of those who were professional journalists, calling them ‘plumbers’. The picture editor on the newspaper had once been a lion-tamer; an ex communist ran the office; he employed a poet to write about cricket. David Astor, you sense, would have embraced Eamon Carr. Ireland owes Eamon Carr a huge debt. His cultural influence on the country through his band Horslips is immense. He has lived several lives and has never had any difficulty in allowing those lives to overlap.  In his…