Thanks for your time mate. Have recently found a ton of info re John ( Williams brother ) and his 2 wives, from Alston days to their Try Again Hotel at Piggoreet on the goldfields here.
Still light on re info on William, but not stressing about it.
Did find a William Liddell who seems close, who married a Betty ( Betsy ),
but have been unable to confirm it our Wm -
1881 Age: 47 Allendale, Northumberland, England Age: 44; Relation to Head of House: Head; Marital Status: Married.
Residence 1901 Age: 67West Allen, Northumberland, England Age: 64; Relation to Head of House: Head.
Death1902 Age: 68 Allendale, Northumberland, England
Not sure how to confirm its him?