I checked his birthdate at: www.iomfhs.im/lawsons/births/moore.html
Then on www.1911census.co.uk/ click on "Full person search". Then click on "Show advanced fields".
First names: Frank Douglas
Last name: Moor
[I marked Variants of name for both, but this turned out not to be necessary.]
Year of birth: 1880 (+ or -) 1
Place of birth: Isle of Man