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|Father||Lord Yohn Royce|
|Spouse||Ser Mychel Redfort|
Ysilla Royce is a noblewoman of House Royce and is the daughter of Lord Yohn Royce of Runestone.
A Feast for Crows
Lord Horton Redfort forces his son Ser Mychel to marry Lord Yohn's daughter, Ysilla.
- ↑ A Feast for Crows, Appendix.
- ↑ 2.0 2.1 A Feast for Crows, Chapter 41, Alayne II.