Features Syndicate, 1986).[...] Halcyon Days 2012-07-30T23:20:18.184-05:00 (image) Above: Halcyon days for Prince Valiant's eldest son Arn and Lydia, daughter of the Viking king Haakon. Art: Hal Foster and John Cullen Murphy (from installment #2175, October 15, 1978). At this point in Prince Valiant 's run, John Cullen Murphy, who had been quietly