You asked:

is richard dawson older than diana dors

No. Richard Dawson is not older than Diana Dors. Richard Dawson is 84 years, 10 months and 1 day old (died aged 79 years, 6 months and 13 days). Diana Dors is 85 years, 10 months and 29 days old (died aged 48 years, 6 months and 11 days).
Richard Dawson

Diana Dors
Diana Dors
Diana Dors