Possible Clues:

• Money paid periodically
• Tips end badly in an emolument
• In church it would pay the South to get to the very last
• If the South comes to the point, that's what keeps the clergy
• Because it's so little pay one may send around for a little extra
• Is the South the very end (and perhaps the very lowest?) of pay?
• Official income of clergyman
• Is the South the very last last thing you'd get from the church?
• Parson's pay
• Salary and courtesy fee enclosed in mail