David Michael “Dave” O’Brien, 75, of Mechanicsville, MD, formerly of S.E. Washington, DC, passed away on May 11, 2022 in Callaway, MD. Born on November 22, 1946 in Washington, DC, he was the son of the late Helen O’Brien and Edward O’Brien. Dave was the loving husband of the late Shirlynn O’Brien, whom he...
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