Ah, but then again just look at these for the 1901 Census for Nottinghamshire!
1901 Census
Frederick Wallis
27, Born: Nottingham, County: Nottinghamshire Parish: Nottingham Occupation: General Labourer
Frederick Wallis, 35, Nottingham; Nottinghamshire; Nottingham; Lace Curtain Draughtsman
Frank Wallis
42, Nottingham; Nottinghamshire; Nottingham; Joiner
William Wallis
1)
32; Notts, Nottingham; Notts Nottingham; Master House Painter
2)
45, Notts Nottingham; Notts Nottingham; Litho Printer
And there were other Wallis's -- labourers, lacemakers, railwaymen and the like -- who looked less likely.