Hi Steve,
This is the William Mullins closest in age, taken from a transcript so I cannot check out that anomaly in the wife's age!
HO107/1849/164 p 8
schedule 29
26 High Street
MULLINS William 32 Labourer b Tisbury, Wilts.
Arundell Wife 64 b Tisbury, Wilts.
Henry 19 Labourer Tisbury, Wilts.
There are other Mullins in Wardour
Juliana age 15 a servant b Tisbury
HO107/1849/170 p 21 schedule 79
76 High Street
MULLINS James 63 Labourer b Tisbury, Wilts.
Martha 60 b Wardour, Wilts.
Cicily Daughter 14 b Wardour, Wilts.
Martha Granddaughter 10 Scholar b London, Middx.
ELITIA
Letitia ? Granddaughter 8 Scholar b London, Middx.
TOOLE John Grandson 8 Scholar b Wardour, Wilts.
HO107/1849/172 p 24 schedule 89
85 High Street
MULLINS Thomas 36 Waggoner b Tisbury, Wilts.
Elizabeth 30 b Fonthill Gifford, Wilts.
Henry 8 Scholar b Wardour, Wilts.
John 6 Scholar b Wardour, Wilts.
Ellen 3 Scholar b Wardour, Wilts.
Joseph 3 b Wardour, Wilts.
Page 25
MULLINS William 1 b Wardour, Wilts.
Charlotte Niece 10 b Wardour, Wilts.
I have found a couple of baptisms on BVRI2
William Henry Mullins bapt 9 Feb 1817 parents Joseph & Sophia in Fonthill Gifford
There is also one in Tisbury in 1814, from BTs
William Mullins bapt 18 Sep 1814, mother Janie Mullins
Don't know if this helps you at all.
Nell