A Plymouth judge has ruled that Lindsay Clancy’s murder trial will take place in the county where the Duxbury mother is alleged to have strangled her three young children, beginning next July, more than three years after the gruesome deaths.

Plymouth Superior Court Judge William Sullivan has denied a request from Clancy’s attorney, Kevin Reddington, for his client’s trial to be held at Suffolk Superior Court in Boston instead of Plymouth Superior Court, where he argued that pooling an impartial jury would be unlikely because of “exploitive prejudicial publicity” from the media.

But Sullivan did side with the defense’s request that the trial be pushed back from its tentative starting date of Feb. 9 to a new beginning date of July 20. The judge urged caution about a June trial because it c

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