<p><a href="//commons.wikimedia.org/wiki/Abraham_Lincoln" title="Abraham Lincoln">Abraham Lincoln</a> in <a href="https://en.wikipedia.org/wiki/United_States_Census,_1850" class="extiw" title="en:United States Census, 1850">1850 US Census</a>.
</p>
The Lincoln household in <a href="//commons.wikimedia.org/wiki/Springfield,_Illinois" title="Springfield, Illinois">Springfield, Illinois</a> included Abraham (spelled "Abram"), Mary, Robert (Todd), and a Catharine Gordon (18 years old, born in Ireland), presumably a servant.
United States Census workers
1850
United States Census