What does Sinclair mean?
How popular is Sinclair?
Sinclair is an unusual given name for males but a very prominent last name for all people (#1239 out of 150436, Top 1%). (2000 U.S. Census)
Displayed below is an analysis of the usage of the boy name Sinclair and affiliated names. Popular variation forms of Sinclair (outside Top 1000) are Santana (#887 2 years ago) and Seymour. Adoption of these forms of Sinclair was widespread during the years 1920-1929 (usage of 0.3885%) and is somewhat lower today (usage 0.0565%, 85.5% less). (Top 1000 Baby Names Records, 2014)