By 11 April 1728 Joseph had returned to London , some years ahead of the Prince Frederick .
Several of Joseph 's subsequent letters speak London 's its continued detention , the London 's of its Captain Williams in Vera Cruz and the political events around the negotiations .
By 11 April 1728 Joseph had returned to London , some years ahead of the Prince Frederick , and several of his subsequent letters speak of its continued detention , the death of its Captain Williams in Vera Cruz and the political events around the negotiations .