my ruby problem...

Given this result set (this cannot be modified) that looks like:

[{"client name"=>"Adenbrook (Avalon Franchising Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"TCo", "job name"=>"INTR - 1300 Phone Charges 2010", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"ADN2611"}, {"client name"=>"Adenbrook Homes (Morris Family Building Trust)", "job status wip c"=>"WIP", "job owner"=>"NSe", "job name"=>"PREL: Fixed Display Centre: Port Macquarie", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"MBT2763"}, {"client name"=>"Media Shop", "job status wip c"=>"WIP", "job owner"=>"TCo", "job name"=>"Media Shop: Polypropylene folder - Contract & Documents", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"MED2801"}, {"client name"=>"Adenbrook Homes (Toolona NSW Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"Media Shop: Tweed Richmond June 2010", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"ATR2817"}, {"client name"=>"Adenbrook (Avalon Franchising Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"PREL: Adenbrook Customer Service Survey: Online Implementation", "job billable"=>nil, "__uid"=>#, "invoice lock"=>nil, "job no"=>"ADN986"}, {"client name"=>"Home Expert Centre", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"PRNT: Home Expert Magazine: Small Format: Issue 3", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"MES2482"}, {"client name"=>"Adenbrook (Avalon Franchising Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"DSGN: Adenbrook Homes: Guidelines Vehicle Brand: 2010", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"ADN2717"}]

I would like to create a hash that looks like (grouped by the job owner):

{ "TCo" => [
    {"client name"=>"Adenbrook (Avalon Franchising Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"TCo", "job name"=>"INTR - 1300 Phone Charges 2010", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"ADN2611"},
    {"client name"=>"Media Shop", "job status wip c"=>"WIP", "job owner"=>"TCo", "job name"=>"Media Shop: Polypropylene folder - Contract & Documents", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"MED2801"},
  ],
  "NSe" => [
    {"client name"=>"Adenbrook Homes (Morris Family Building Trust)", "job status wip c"=>"WIP", "job owner"=>"NSe", "job name"=>"PREL: Fixed Display Centre: Port Macquarie", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"MBT2763"}
  ]
  "CCo" => [
    {"client name"=>"Home Expert Centre", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"PRNT: Home Expert Magazine: Small Format: Issue 3", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"MES2482"},
    {"client name"=>"Adenbrook (Avalon Franchising Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"DSGN: Adenbrook Homes: Guidelines Vehicle Brand: 2010", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"ADN2717"},
    {"client name"=>"Adenbrook Homes (Toolona NSW Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"Media Shop: Tweed Richmond June 2010", "job billable"=>"Yes", "__uid"=>#, "invoice lock"=>nil, "job no"=>"ATR2817"},
    {"client name"=>"Adenbrook (Avalon Franchising Pty Ltd)", "job status wip c"=>"WIP", "job owner"=>"CCo", "job name"=>"PREL: Adenbrook Customer Service Survey: Online Implementation", "job billable"=>nil, "__uid"=>#, "invoice lock"=>nil, "job no"=>"ADN986"}
  ]
}