Richard K. Lahnstein, age 85, a lifelong Lincoln resident, died at Care Dimensions Hospice House on November 19, 2025, following a brief illness.

He was born in Boston on May 28, 1940 as the son of the late Karl and Margaret (Lennon) Lahnstein. After attending Lincoln public schools through eighth grade, he graduated from Weston High School in 1958. He earned an associate degree in Architectural Engineering from Wentworth Institute in 1960.

For 43 years, Mr. Lahnstein worked for the Stop & Shop Supermarket Company, where he retired from as a Senior Store Planning Engineer in their construction department.

He leaves behind his devoted partner, Geneva Smithlin of Lexington, his nephews, Frank A. Domenichella, III and his wife Bea of Leominster, Paul Domenichella and his wife Jeanne of Arlington, his niece, Mary (Domenichella) O'Halloran and her husband Chuck of Fitchburg, along with four great nieces, one great nephew and one great-great niece. In addition to his parents, he was predeceased by his sister, Margaret "Peggy" Domenichella, his brother-in-law, Frank A. Domenichella, Jr. and his nephew, Stephen Domenichella.

Family and friends will gather for visiting hours at the Dee Funeral Home, 27 Bedford Street, Concord Center on Tuesday, November 25th from 4 to 7 pm. The funeral will be on Wednesday, November 26th beginning at 10 am from Dee Funeral Home, followed by a Funeral Mass at 11 am in St. Joseph Church, 142 Lincoln Road, Lincoln. Burial will follow at Lincoln Cemetery.

In lieu of flowers, please consider a contribution in his memory to Care Dimensions Hospice .

Arrangements are entrusted to Dee Funeral Home & Cremation Service of Concord.