Question:
Which position did George Montagu, 6th Duke of Manchester hold in Mar, 1835?

Context:
 George Montagu, 6th Duke of Manchester holds the position of Member of the 12th Parliament of the United Kingdom from Jan, 1835 to Jul, 1837. 
 George Montagu, 6th Duke of Manchester holds the position of Member of the 8th Parliament of the United Kingdom from Jun, 1826 to Jul, 1830. 
 George Montagu, 6th Duke of Manchester holds the position of Member of the 10th Parliament of the United Kingdom from Apr, 1831 to Dec, 1832. 
 George Montagu, 6th Duke of Manchester holds the position of Member of the 9th Parliament of the United Kingdom from Jul, 1830 to Apr, 1831. 
 George Montagu, 6th Duke of Manchester holds the position of Member of the 11th Parliament of the United Kingdom from Dec, 1832 to Dec, 1834.

Answer:
Member of the 12th Parliament of the United Kingdom