I brought up this question in a post in 2016 because it's referenced is Staked!
A slight, quick movement and a splash caught his eyes, as he
skirted around Quixotic Pond; probably a merrow, the first of the elusive
creature he almost saw since returning home. ("Staked!" Chapter 25:
Steward of Tara).
A merrow is an Irish mermaid (or merman).
Read on:
