Lee Kaufman and her husband, Morty, were unlikely celebrities when they agreed in 2014 to appear in commercials for the Swiffer line of cleaning products. She was then 91 years old. They were the pioneers in an advertising strategy built on ordinary people, rather than actors. The public responded with adoration and an Internet click count that soared into the millions.

They appeared on TV shows and news outlets. The cleaning products weren’t the attraction; what generated fans was that the Kaufmans had a finish-each-other’s-sentences cuteness about them, and they seemed to have mastered the secret to a long and happy marriage, The New York Times said.

Mrs. Kaufman died on Dec. 18 at a hospice center in Port Jefferson, NY. She was 99.

In 2013, Mrs. Kaufman told Newsday that her late-life fame held a lesson. “The bottom line is, don’t die young,” she said. “There are too many things that can happen.”

Dr. Ronald Weinstein, who envisioned the future of telepathology, died Dec. 3 at a medical center in Tucson, AZ. He was 83.

Dr. Weinstein is perhaps the father of a technology now known as telepathology that enables specialists to render diagnoses and other medical opinion from afar using telecommunications technologies. At the time, 1986, the internet was in its early stages, fiber optics were not widely available, and the high-definition screens now common were unknown.

Dr. Weinstein saw early on the potential for telepathology to broaden medical access. “The limited availability of pathologies in some rural locations and areas serviced by federal medical centers is a bottleneck in the United States health care delivery system,” he wrote in Human Pathology in May 1986. By the time he died, his early vision of telemedicine’s possibilities had become an integral part of the health care system, not only in pathology but also in numerous other specialties, bringing clinical services to hundreds of thousands of patients.

Judith Davidoff, who mastered an assortment of stringed instruments not widely played for centuries, especially the cello-like viola da gamba, and became a leading proponent and player of early music, died Dec. 19 at her home in Manhattan. She was 94.

Curiosity led to a passion for early music and the instruments used to perform it. She became part of an early-music scene in the middle of the last century and became a major force in classical music, even influencing how works from various periods were performed.

The curiosity that first led Ms. Davidoff to early music stayed with her for her entire career. In 1971, for example, when she was already established as an early-music performer, she took a course in how to dance the court dances of the Baroque era. Learning the steps gave her new insights into how the accompanying music should be performed. She was also always on the lookout for new discoveries, touring the world in search of instruments to play. Although the instruments she played may have been from earlier eras, she believed new works could and should still be created for them. She was devoted to getting living composers to write for the viola da gamba.

Bob Saget, the standup comic and actor known as Danny Tanner on “Full House” and the host of “America’s Funniest Home Videos,” was found dead on Sunday in a hotel room at the Ritz-Carlton Orlando, Grande Lakes. The cause of death was not known. He was 65.

On “Full House,” Mr. Saget played a widowed father who shared his house with his three daughters, his brother-in-law, and his best friend. The show aired from 1987 to 1995. Later, he voiced the narrator of “How I Met Your Mother,” an older and wiser version of the show’s protagonist. In contrast to his squeaky-clean image on ”Full House” and “America’s Funniest Home Videos,” Mr. Saget delighted in raunchy, profanity and scatological-laden stand-up routines.