As of 2013, who was the Speaker of Uttar Pradesh Legislative Assembly?

The Speaker of a State Legislative Assembly is the presiding officer elected by the members of that Assembly to conduct its proceedings, maintain order, and rule on procedural matters; the post is distinct from the Governor (the state's constitutional/executive head) and from cabinet ministers or the Leader of the Opposition (who hold separate political roles within the Assembly or the government).

For the term relevant to this question (around 2013), the 16th UP Legislative Assembly, formed after the 2012 state election, elected Mata Prasad Pandey as its Speaker on 13 April 2012; he continued to hold the post through the Assembly's full term ending in March 2017, which covers 2013.

• Niyaz Hasan (rendered here as "Niaz Hussan") did preside as Speaker of the UP Legislative Assembly, but during an earlier, separate term (1985-1990) - not the 2012-2017 term this question refers to.

• Swami Prasad Maurya was a prominent Uttar Pradesh political leader who has held cabinet-minister and opposition-leadership roles at different points, but never the Speaker's chair of the state Assembly.

• B.L. Joshi served as Governor of Uttar Pradesh from 2009 to 2014 - the state's executive head under the Constitution - a completely different constitutional office from the Speaker of the Legislative Assembly.

Since only one of these four names held the Speaker's post during the assembly term this question addresses, Mata Prasad Pandey is the correct answer.