William Russell Mackenzie passed away quietly on his 100th birthday, ending what had been a life in which he said he had "no regrets". He was born on June 7, 1910, in New York City. He attended Stanford University but was unable to complete his studies due to the Great Depression. He and his brother found jobs working on Hoover Dam, which became the subject of many favorite stories.Eventually, he moved to Southern California and worked in Los Angeles for Brunswig Drug Company. In 1947, he came to La Jolla and became a partner in the Willis Allen Company. It was in this paradise by the sea that Bill was most happy, as he loved everything about the beach and ocean, especially the warmth of the sun. His greatest joy was sailing with friends. His biggest thrill and accomplishment came from crewing in the Honolulu Race, and he continued to sail whenever and wherever he could. Bill was an avid tennis player and played singles well into his late eighties. When there were no more singles partners and the 'kids' were too strong, he played golf at the Beach and Tennis Club until he was 98, having scored a hole in one at the young age of 95.Bill married Burl Milburn in 1962 and immediately became an integral part of her family. He was called dad by Burl's two daughters and Boppa by his subsequent grandchildren and great grandchildren. He took great pleasure in traveling with Burl with each of the grandchildren to a destination of the grandchild's choice. Bill was a very special and well loved member of the family.Bill is survived by his wife of 48 years, Burl H. Mackenzie; her daughters, Pam Milburn Bruder and Karen Milburn Gabsch of La Jolla; one daughter from a former marriage, Lyn Mackenzie Howe of Thornfield, Missouri; five grandchildren and four great-grandchildren. The family celebrated his life, his 100 years, and scattered his ashes at sea, per his request. Bill had a life well lived, and the family likes to say, "He did it his way."The family suggests any memorial gifts go to the Elephant Crossing at the Wild Animal Park or to San Diego Hospice.