Pornopedia:On this day/January/31
- 1975 – The Japanese erotic model Sakura Sena (49) is born in Chigasaki, Kanagawa, Japan.
- 1980 – The American porn actor Johnny Castle (44) is born in Pennsylvania, USA.
- 1983 – The American porn actress Lisa Marie (41) is born in Newport Beach, California, USA.
- 1984 – The American porn actress Charlie Laine (40) is born in Marion, Wisconsin, USA.
- 2007 – The porn movie Sex & Violins starring Monique Alexander, Penny Flame and Stefani Morgan is released by the American studio Vivid.