House Locke of Oldcastle is a noble house from the North. They blazon their banner as two bronze keys crossed over a white pale on purple.
The known members of this house are:
Lord Ondrew Locke, Lord of Oldcastle. An old man.
Ser Donnel Locke, a knight.
Ser Mallador Locke, a senior member of the Night’s Watch.
Sybelle Locke, Robett Glover’s wife.