Diane was born on November 23, 1947, in Detroit, Michigan to parents James Reginald Spencer and Dorothy Luttenberger Spencer. She graduated from South Lake High School in Michigan earning the honor of magna cum laude. After high school, she went on to enjoy a long and successful career in the medical field working for both The University of Utah and Blue Cross Blue Shield.
Diane married Alexander Jack Colligan on April 27, 1968, and the two celebrated 58 years of marriage this year, a testament to their lifelong love and devotion. Together Diane and Alexander had 3 daughters, Tracey, Susan and Sandra, raising them in a home filled with warmth and laughter. In her later years, she fully embraced her role as a grandmother and great-grandmother and delighted in time shared with her growing family.
Diane was an avid reader, talented cook, and enthusiastic traveler who embraced life with an open heart and a curious mind. She was a member of The Woodlands Community Presbyterian Church.
Diane was preceded in death by her father Reginald James Spencer, her mother Dorothy Gertrude Luttenberger Spencer, and her brother Paul James Spencer. She is survived by her beloved husband Alexander Jack Colligan; her children Tracey Colligan (and husband Mike Long), Susan Hajji, and Sandra Daniecki; grandchildren Amber Sudbury-Pearson (and fiance Fletcher Like), Ashley Cooper (and husband Dylan), Dylan Sudbury-Pearson, Lane Colligan, Alexander Hajji, Isabella Hajji, and Hunter Daniecki; great granddaughter Tessa Cooper; and many nieces and nephews.
A visitation for Diane will be held on Monday, September 28, 2026, from 5 pm to 8 pm at Forest Park The Woodlands Funeral Home, 18000 I 45 South, The Woodlands, Texas 77384. A funeral service will take place on Tuesday, September 29, 2026, at 10 am, also at Forest Park The Woodlands Funeral Home. A committal service will follow, at 11 am, at Forest Park The Woodlands Cemetery.
