From A Wiki of Ice and Fire
House Greenhill is a house in Westeros, possibly from the Reach. It is also possible the house is descended from a bastard line from the westerlands, due to the bastard name from there being Hill, and descendants of bastards modifying the name, such as in the case of House Longwaters.
A Feast for Crows
Ser Courtenay Greenhill is named by Taena of Myr of being among the group of household knights who spend time in the presence of Queen Margaery Tyrell.
House Greenhills at the end of third century
The known Greenhills during the timespan of the events described in A Song of Ice and Fire are:
- Ser Courtenay Greenhill, a household knight
- ↑ A Feast for Crows, Chapter 28, Cersei VI.