"Murphy (Stuart-Murphy) Edward Aged 89 years. Passed away peacefully on 6th April 2018. The much loved husband of Wendy and stapfather of Tim, Nick, Jerry and Andy..."
https://www.legacy.com/person/Edward-Murphy-47183653There is a dead link to a fuller obituary in the Chorley Guardian.
Based on the above I take it that originally he was "Murphy" and added the "Stuart" name on his marriage in 1995 to Wendy Mary Joynson, née Stuart, of the Earls Castle Stewart.