Karen Alicia Shannahan

Karen Alicia Shannahan, age 69, of Seabrook, Texas passed away on Wednesday, July 3, 2024, in Houston, TX after a long, heart-breaking period of illness.

She was born on November 21, 1954, in Cedar Rapids, IA to Paul Marchal and Mary (Dickson) Marchal. She attended Dickinson High School and Houston Community College.

Karen worked at Clear Creek Animal Hospital as a Veterinary Technician and at MD Anderson as a Lab Technician. She also was a member at Seabrook United Methodist Church.

She is preceded in death by her parents Paul and Mary Marchal Paul; Husband David Garrett and Brother-in-Law and Sister Darrel and Kathy Barbo.

Karen is survived by Daughter Holly Garrett (Seabrook, TX); Granddaughters Eva and Marilyn Garrett (Seabrook, TX); Son and Daughter-in- Law Christopher and Rebecca Shannahan  (League City, TX); Granddaughters Scarlett Shannahan, Mikayla Engelbrecht (League City, TX) ; Grandsons Brendan Engelbrecht and Asher Engelbrecht (League City, TX); Brother and Sister-in-Law Ken and Lois Marchal (Rosharon, TX) and Brother-in-Law and Sister-in-Law Matt and Missy Garrett (Marshall, TX); Brother-in-Law and Sister-in-Law John and Mona Kupsa (Santa Fe, TX) and a host of cousins from Iowa, Illinois, Michigan, and Florida.

Services will be held at Crowder Funeral Home, 111 W. Medical Center Blvd, Webster, TX 77598 on July 11, 2024.  A visitation will be held at 1pm and funeral service at 2pm. The graveside service will follow immediately after at Forest Park East Cemetery, 21620 Gulf Fwy, Webster, TX 77598.


  1. When I first took ownership of Clear Creek Animal Hospital in 1995, we were a very small, close group. One receptionist, one kennel technician, one veterinary, and myself. Karen was the veterinary technician and my right arm. I would never have made it without her. She was loved by the clients, their pets, the staff and me. She made me laugh and made work fun. She was the best, and will be missed very much.

    Kim Runge
  2. I met Karen and David as newly weds. I was their realtor and sold them the house that Holly lives in today. They had just settled in when David was diagnosed with cancer and passed. She was so young and brave raising holly alone. She was a caring and lovely lady. I will miss her.

    Beth Williams
    • I remember Karen’s beautiful smile and sweet, genuine personality from our days in high school. Sad to hear she went through a period of illness. Rest in peace, kind Karen.

      Marta Durham
  3. I knew Karen briefly before her illness. She was one of the sweetest women I know and was very much loved by her children. She has touched many lives and will be missed.

    Ruby Copeland
  4. Karen and I met in VOE in high school, she was so smart. Then we met again several years later at Seabrook United Methodist where we raised our children. She also worked at the Vet and took care of our dogs. Karen was such a sweet person. She will be missed. God bless her!

    Mary Evans Hoepfner

Leave Your Condolences

Make sure you enter the (*) required information where indicated. Basic HTML code is allowed.