Maid of the fields
From A Wiki of Ice and Fire

The Prince of Pentos with the maid of the fields and the maid of the seas, as depicted in Game of Thrones: Histories & Lore.
The maid of the fields is a title that is given to a young maiden of the Free City of Pentos. Every year a new maid of the fields is chosen.
About
On the first day of each new year, the Prince of Pentos deflowers the maid of the fields and the maid of the seas.[1][2] This ancient ritual, which may arise from the mysterious origins of pre-Valyrian Pentos, is meant to ensure the continued prosperity of Pentos on land and at sea.[2]
References
- ↑ A Dance with Dragons, Chapter 1, Tyrion I.
- ↑ 2.0 2.1 The World of Ice & Fire, The Free Cities: Pentos.