Yes I have him on all of the census records, even 1891 where his birth year has been transcribed incorrectly. He was shown as a scholar in 1841 in Ockbrook which was/is a Moravian Settlement. I don't think the picture is from Ockbrook as I have visited the Settlement and found a large number of Drennen graves.
I assume he moved from Fillongley Hall to Leamington when he married in 1879. Buried in the minutia of his accounts, I have found mention of these places / dates
May 1882 moved to 5 Southwick Crescent, Hyde Park, London - Mr Cohen
Feb 1885 mention of St Leonards
Aug 1885 mention of Banstead
Feb 1886 mention of St Leonards
Aug 1886 mention of Banstead
Feb 1887 mention of 5 Southwick Crescent
Jun 1887 moved to Bennington Park in Campbell although Campbell may well have been a person's name
Apr 1889 came to Dover to Mrs Heygates service and came to the Oaklands Herefordshire.
Think I need a good stroll around the Docklow area!