Dennison (Denny) Fiala died on April 17 in Guilford the day before his 79th birthday.

He was born in Duluth, Minn., to Dr. Martin J. Fiala and Grace Fairchild Fiala. His father died when he was two years old and his mother moved to Ithaca, N.Y. with her three young sons.

Mr. Fiala graduated from Ithaca High School and Cornell University with a degree in mechanical engineering.

He started his career as a rocket scientist with Thiokol Chemical Co, then worked with film for Dupont and finally in specialty cement.

He moved to Ridgefield in 1970 and became very involved in the community serving on the Charter Commission, volunteering at the Keeler Tavern and working to start the historical society. He was chairman of the Ridgefield Bicentennial Commission and oversaw 33 different projects including a book, a play, balls and several townwide celebrations culminating in the reenactment of the Battle of Ridgefield.

He was predeceased by his brother, Martin and is survived by his brother John and former wife, Beverly Osgood and sons Josef of Newtown and James of Guilford and seven grandchildren.

Internment will be private.