Hello Sharyn, Unfortunately, your William and Elizabeth missed out on the 1851 census in England, U.K.However, all is not lost! I checked for a marriage ref for them and found they married in Plymouth, in the County of Devon, U.K. in 1843. If you wish to order their marriage cert you will need to supply the following detais=
WILLIAM MATTERS. ELIZABETH BICKLE. MARRIAGE YEAR 1843. MARCH QTR. Vol.9. Page.398. Plymouth ---------- Where to contact=
The Register Office, Chief Executive's Department, Lockyer Street, Plymouth, PL1 2QD. U.K. ----- or you can order online=
email@example.com ------------------- What to expect on marriage cert=
'District, Church, Parish, Location, Date of Marriage, Forename & Surnames, Ages, Marital Conditions, Professions, Addresses, Father's Forename & Surname, Father's Occupations, for both parties present. Witness names, Priest/Vicar's Name,& Signature.'
It's possible that you may find them in the 1841 U.K. census when you know a bit more about them from the marriage cert.