David Conway died in June 1864 in Rhyl
For background,in case you don't have it,census refs as follows:-
1861  4296 38 12  Bryn y Wal (between Rhyl and Rhuddlan)
1851  2189  71 47  Haigh St. Liverpool
1841  560  13/13  19   Jones Court Liverpool
(amongst his family is John Conway,here an apprentice at law who goes on to become an attorney/barrister,but dies before his father)
1851  2183  502  46  Joy Street,Liverpool (articled clerk)
1861  2725  86  42  Holly Hedge,Moor Lane,Great Crosby (attorney at law)
Regards
Roger