Pepys took over this role from Thomas Povey in March 1665 after Povey was unable to keep his accounts in order.
"So I to Sir Philip Warwick and with him to my Lord Treasurer, who signed my commission for Tangier-Treasurer and the docquet of my Privy Seal, for the monies to be paid to me."
The Lord Treasurer was Thomas Wriothesley, 4th Earl of Southampton
L&M: Dated 18 April, 1665 this authorized payment (in quarterly installments) of up to £70,000 p.a. to Pepys. But it did not cover payments in the current quarter: see http://www.pepysdiary.com/diary/1665/04/29/#c21...
Chart showing the number of references in each month of the diary’s entries.