John luke, cole, sadie, and reed photographed as kids, The robertson cousins are a tight knit bunch. from left to right: john luke, cole, sadie, and reed. courtesy of the robertson family.. Sadie, john luke, will, and bella in a car - sadie, Korie tweeted this photo of john luke, sadie, and bella with the caption: hi mom! @john316luke923 @sadierob #will #bella pictures from duck dynasty on a&e.. Duck dynasty’ star john luke robertson marries mary kate, After getting down on one knee last october, john luke robertson has taken the plunge and is now a married man. the duck dynasty star wed his fiancé of eight months.