Name the US presidents who were also only children.

Only three US presidents can be considered only children.

1.Franklin D. Roosevelt
2.Gerald Ford
3.Bill Clinton

All three had half siblings, however. Roosevelt had a younger half brother. Ford had four half brothers and two half sisters. And Clinton has one younger half brother.

Interestingly, 11 US presidents were the oldest child in their family, and six presidents were the youngest child in their family.

http://www.infoplease.com/askeds/5-22-01askeds.html

Thanks McGruff for your research, the answer I had was none, but you discovered that three of them had only half siblings which is worth a mention.