The first Cabinet for Ontario, Canada consisted of Premier John Sandfield Macdonald and four other Cabinet ministers. It was known as the "Patent Combination."[1]
Note that Sandfield Macdonald, Wood, and Carling also sat as MPs in federal parliament; Cameron ran for a federal seat and lost. This was a cabinet built to defer to Ottawa in any disputes in jurisdiction between the federal and provincial level of government in the new Confederation. Richards, meanwhile, didn't even run in the general provincial election, and only joined Cabinet after winning a by election late in 1867.
Sandfield Macdonald represented a riding in Eastern Ontario, while Cameron, Carling, Richards and Wood all hailed from constituencies in Western Ontario. Cameron and Richards did have familial roots in Eastern Ontario, having been born and raised there.
This ministry would survive the first parliament by several months, finally resigning 20 December 1871, as Sandfield Macdonald could not command the confidence of a much more Liberal dominated 2nd Parliament of Ontario. Sandfield Macdonald himself did not longer survive his ministry, passing away after a long illness on June 1, 1872.
Cameron would go on to serve as Leader of the Opposition to the Blake ministry, while Carling and Woods would soon move into careers in federal politics. Richards would soon retire.