Whist looking for a Gt.Aunts family in the 1851 census, I came across an entry for a Sir Francis Bernard Morland 5th Baronet
, at his country lodge. This was a few 'doors' down from my rellie.
So I 'googled' him, and low and behold he was baptised at St.Georges, Hanover Sqr. London
So now he obviously has a home in London, which explains why some of the locals at his country residence, ended up in London on various census.
So it would be worthwhile if your rellies had a 'Lord of the manor'
living fairly close, he could provide a clue as to some of your lost rellies whereabouts.
So I found this:- http://thepeerage.com/index.htm
If you have a 'Lord of the Manor'
in your rellies neighbourhood, he is more than likely listed here.
And so the search carries on.