Diane Cosgrove Obituary
With heavy hearts, we announce the death of Diane Cosgrove of Cedar Grove, New Jersey, born in Montclair, New Jersey, who passed away on March 8, 2026. Leave a sympathy message to the family on the memorial page of Diane Cosgrove to pay them a last tribute.
In the quiet moments of reflection, amidst the gentle rustle of leaves and the whispered song of the stars, we shall carry Diane's memory with us, a guiding light illuminating the path ahead. May Diane's journey be filled with peace and serenity, and may she find rest in the embrace of eternity.
She was predeceased by: her parents, Willard Peterson and Marie Peterson. She is survived by: her husband Frank Cosgrove; her stepchildren, Frank Cosgrove (Janelle Cosgrove) and Kristy Caputo (Rocco Caputo); and her siblings, John Peterson (Coni), Lynn Crane and Janice Amatucci. She is also survived by many extended family members and friends.
In lieu of flowers, the family kindly asks that donations be made to the Matthew Perry Foundation to support those struggling with substance abuse. Donate to the Matthew Perry Foundation (https://matthewperryfoundation.org) While she will be deeply missed, her family finds comfort in knowing she is at peace.
