Question:
Which position did William Leader Maberly hold in Mar, 1832?

Context:
 William Leader Maberly holds the position of Clerk of the Ordnance from Jan, 1833 to Jan, 1834. 
 William Leader Maberly holds the position of Member of the 10th Parliament of the United Kingdom from Apr, 1831 to Dec, 1832. 
 William Leader Maberly holds the position of Member of the 6th Parliament of the United Kingdom from May, 1819 to Feb, 1820. 
 William Leader Maberly holds the position of Member of the 8th Parliament of the United Kingdom from Jun, 1826 to Jul, 1830. 
 William Leader Maberly holds the position of Surveyor-General of the Ordnance from Jan, 1831 to Jan, 1832. 
 William Leader Maberly holds the position of Member of the 7th Parliament of the United Kingdom from Mar, 1820 to Jun, 1826. 
 William Leader Maberly holds the position of Member of the 9th Parliament of the United Kingdom from Apr, 1831 to Apr, 1831. 
 William Leader Maberly holds the position of Member of the 11th Parliament of the United Kingdom from Dec, 1832 to Jun, 1834.

Answer:
Member of the 10th Parliament of the United Kingdom