I have some information on Lafones in Liverpool, but mostly for a later period.
'Liverpool Heroes', Book 2 [edited by Ann Clayton and sold locally] contains short biographies of 18 holders of the Victoria Cross with Liverpool links. Alexander Malins Lafone is one of them - his VC was won at Beersheba in 1917.
The biog includes a little background about the family: Samuel L.. established a hide and leather business. He had four sons, Alexander, the earliest, probably born in 1808.
This may not help, but I may be able to get more for you.
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