How many families have won Olympic medals like father and son etc?

Answer 1

I don't know that that number is available but there have been a few ...

1) Twin sisters Georgina Evers-Swindell and Caroline Evers-Swindell of New Zealand - won 2 gold medals in rowing, one each at the 2004 Games and 2008 Games.

2) Father Bill Buchan and son Carl Buchan of the United States - Bill won gold in sailing at the 1984 Summer Games and Carl also won gold in sailing at the 1984 Summer Games.

3) Brother Eric Heiden and sister Beth Heiden of the United States - Eric won 5 gold medals in speed skating at the 1980 Winter Games and Beth won a bronze in speed skating at the 1980 Games.

4) Brother Francisco Fernández Ochoa and sister Blanca Fernández Ochoa of Spain - Francisco won gold in slalom alpine skiing at the 1972 Winter Games and Blanca won bronze in slalom alpine skiing at the 1992 Winter Games.

5) Twin brothers Phil Mahre and Steve Mahre of the United States - Phil won 2 medals in alpine skiing, silver at the 1980 Winter Games and gold at the 1984 Winter Games, and Steve won a silver medal in alpine skiing at the 1984 Winter Games.

6) Aunt Birgit Fischer and niece Fanny Fischer of Germany - Birgit won 12 medals (8 gold, 4 silver) in canoeing between 1980-2004 and Fanny won a gold medal in canoeing at the 2008 Games.

7) Twin brothers Pavol Hochschorner and Peter Hochschorner of Slovakia - won 3 gold medals in canoeing at the 2000, 2004, and 2008 Summer Games.

8) Brothers Aldo Nadi and Nedo Nadi of Italy won gold medals in fencing at the 1920 Summer Games.

9) Father Oscar Swahn and son Alfred Swahn of Sweden - Oscar won 6 medals and Alfred won 9 medals in shooting at the 1908, 1912, 1920, and 1924 Summer Games.

10) Sisters Venus Williams and Serena Williams of the United States - Venus won 3 gold medals and Serena won 2 gold medals in tennis at the 2000, 2004, and 2008 Summer Games.

I'm sure there are more. If you know of any, please add to this answer with the names and relation of the family members along with the country they represented and the sport they played.