Table:
text: Maryland's 3rd congressional district
List of members representing the district
List of members representing the district
blank Name_ Took_office Left_office Party Notes_Events_
19 James Wray Williams March 4, 1841 December 2, 1842 Democratic died
20 Charles S. Sewall January 2, 1843 March 3, 1843 Democratic 
21 John Wethered March 4, 1843 March 3, 1845 Whig 
22 Thomas Watkins Ligon March 4, 1845 March 3, 1849 Democratic 
23 Edward Hammond March 4, 1849 March 3, 1853 Democratic 
24 Joshua Van Sant March 4, 1853 March 3, 1855 Democratic 
25 James Morrison Harris March 4, 1855 March 3, 1861 Know-Nothing 
26 Cornelius Lawrence Ludlow Leary March 4, 1861 March 3, 1863 Unionist 
27 Henry Winter Davis March 4, 1863 March 3, 1865 Unconditional Unionist 
28 Charles Edward Phelps March 4, 1865 March 3, 1867 Unconditional Unionist

Question: In Maryland's 3rd congressional district, how many people were in office overall for the Know-Nothing Party?