Do you have Rebeccah's maiden name?
Do you have the date that William Hall married Rebeccah? Did they marry in Gloucestershire?
Do any of the following look like the right Thirza?
Anne Susannah Teresa Hall
England and Wales Birth Registration Index, 1837-2008
birth registration: 1864 Gloucester, Gloucestershire, England
Thurza Hall
England and Wales Birth Registration Index, 1837-2008
birth registration: 1875 Westbury On Severn, Gloucestershire, England
Annie Theresa Hall
Niece
England and Wales Census, 1871
birth: 1864 Gloucester, Gloucestershire
residence: 1871 Cirencester, Cirencester, Gloucestershire, England
other: Cirencester, Cirencester
other: Hannah Bailey, Frederick Bailey, Winefred Rose Hall, Elizabeth Pullen, Sarah Pash
Thirza Hall
England and Wales Marriage Registration Index, 1837-2005
marriage: 1887 Chipping Sodbury, Gloucestershire, England
other: Guy Spencer
Thirza Hall
England and Wales Marriage Registration Index, 1837-2005
marriage: 1895 Chipping Sodbury, Gloucestershire, England
other: George Isaac Cambridge, Henry Hinton, Rhoda Rawlings