Although it is possible to have people listed twice it's more likely to be 2 different people with the same name . They could be related .
A Enoch Locke married Priscilla Smith in 1900
Enoch and Priscilla Lock parents of Noah
ENOCH listed as hawker of no fixed abode on baptism of their son Noah in 1904 . Radnorshire Wales If that helps it could be yet another couple !