[Shona]

I've got rather hooked on the Druce family and the case of Thomas Charles Druce being the Duke. But the more I read, the more I wonder whether Thomas Druce who married Elizabeth Crickmer is a different person from the Thomas Charles Druce who married Annie May.

There are certainly a lot of Druces in the 1843 Post Office directory for London:

Druce & Co, furniture department, Bazaar, 4 King Street, Portman Square
Druce & Brock, upholsterers etc, 200 Regent Street
Druce, Charles & sons, Attorneys, 10 Billiter Square
Druce Thos & Co, Hanstown Brewery, Low. St George St, Chelsea
Druce, Thos & Wm, timber and coal mers, Paradise Row, Chelsea
Druce, John, butcher, 13 Skinner St, Sommerstown
Druce, Joseph, butcher, 6 Pitfield St, Hoxton
Druce, Thomas, butcher, 20 Weymouth St, Portland Place
Druce Thomas jn, butcher, 33 Pitfield St, Hoxton
Druce, Wm sen, Feathers PH, 25 Wellington Terr, Waterloo Road
Druce Wm, jn, Rose & Crown, 15 Crown Street, Soho

Thomas Charles Druce, the brewer, died in 1860, leaving about £1,500. His address at the time was Warwick Street.

Looking at the electoral rolls for London for Thomas Druce, we get the following:
1844 200 Regent Street, house
1847 200 Regent Street, house
1850 Upper Baker Street, Portman Square, workshops
1851 20 Royal Avenue, Chelsea, Hanstown brewery and two houses adjoining
1851 Upper Baker Street, Portman Square, workshops
1852 20 Royal Avenue, Chelsea, Hanstown brewery and two houses adjoining
1853 As 1852
1858 128 Warwick Street, house
1858 58 Baker Street Portman Square, workshops