Cover photo for Martin James O'Brien, Jr.'s Obituary
Martin James O'Brien, Jr. Profile Photo
In Memory Of
Martin James O'Brien, Jr.
1968 2022

Martin James O'Brien, Jr.

August 23, 1968 — December 22, 2022

On Thursday, December 22, 2022 our sweet son, Mo O'Brien lost his battle with cancer leaving his parents, Martin and Shirley, his son Mack, his brothers Kevin and Patrick, family, nieces and nephews, fiancee Terri Branson, and many dear friends.

He was so brave and a hard working perfectionist who considered himself a giggle spreader. He was loving and a snappy dresser. Once a friend of Mo's always a friend.

Thank you everyone who was so thoughtful and kind to our family during this difficult time.

... a grieving Mom.

Mo's family is planning a Celebration of his Life at a later date, please check back for updated service information.

To share a memory of Mo or leave a special message for his family, please visit the guestbook below.
To order memorial trees or send flowers to the family in memory of Martin James O'Brien, Jr., please visit our flower store.

Service Schedule

Past Services


Ste. Philippine Catholic Cemetery

4057 Towers Road, Saint Charles, MO 63304

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