But there were signs that the relationship between father and son was not easy. According to civil documents obtained by the Boston Globe, Daniel and Brenda Kerrigan sued Mark for $105,000 for money spent to take care of his dogs and pay his mortgage and lawyers' fees. The case was dismissed.
Police said Mark and Daniel Kerrigan fought on the night of the father's death.
"He [Mark Kerrigan] stated that he wanted to use the phone, and his father would not let him,'' a Stoneham police report filed in court said. "He said that he struggled with his father and put his hands around his father's neck, and his father fell to the floor. He said that his father was faking it.''
Nancy Kerrigan won a silver medal at the 1994 Winter Olympics in Lillehammer, Norway. She became the center of a media firestorm when, a month before the games, she was attacked.
Kerrigan retired from active competition after the 1994 Olympics. She has appeared in occasional skating exhibitions, and had a small part in the 2007 Will Ferrell film "Blades of Glory."
In 1995, Kerrigan married her agent, Jerry Solomon. They live a few miles away from her parents' home in Lynnfield, Mass. Calls from ABCNews.com to Solomon requesting comment were not immediately returned.
Janet Kerrigan said she had advice for anyone in a physically abusive relationship. "Get out," she said. "Get out. It doesn't get better. It gets worse. If you look at what happened to me, and see and hear and believe, and the outcome was a death, granted it wasn't me, it was the father killed.
"When I heard that it was Danny, my heart broke. There was no need for Danny to die that way. No need."