So looks like both deceased by 1851 Census;
From me;
William Harbidge
Burial 30 Mar 1851, Holy Trinity, Belbroughton
Age 66, abode Belbroughton Bell Heath
From rosie99
Burial at Holy Trinity, Belbroughton
Maria Harbidge
Age 66
Burial date 10 Sep 1849
The Bromsgrove William was likely bapt there 27 Dec 1784, Father HENRY
1841 we have;
Wm Harbur 55
Ann Harbur 50
1851 Census
William Harbridge 66 Head Mar born Bromsgrove
Ann Harbridge 63 Wife born Bromsgrove
1861 as you mentioned he is widowed.