It should be noted it is felt that some of the Elwald (Christian name meaning of forested (foresta)).
Wake and Elwald are both Anglo-Saxon names;
Wake is of Cottingham-Liddel;
Land as one can see went from Wake through Robert the Bruce to the Douglas family.
As one can see that land of the Stuteville was passed to an heir Joan Stuteville Wake to husband John Wake.
Stuteville Castle Cottingham East Riding, Yorkshire;
Also in later years there was a Thomas Elwald farmer of The Manor of Cottingham;
Wake also had taken over land in the Debatable Lands, of Kirkandrews;
The reason some Elwald may have went from Wake land of Cottingham, to the Liddel, because of the responsibility of the Wake family to provide troops for the Scottish borders.
If should be noted that Elwald were on the Liddel in Kirkandrews and Liddesdale, Hermitage.
Barony of Liddel quite large;
Liddel Strength (The Mote).
Map below shows locality of Liddel Strength (The Mote);
Liddel Castle near Old Castleton;
Overall region map;
Above shows Liddel Strength, Liddel, and Hermitage Castle.
It show be noted that Elwald people of the forest, lived in forest patches around at first the Ermydoune (army fort pre Declaration of Arbroath) then Ermytage (after Arboarth; army guard post), now Hermitage. INFINIS has proposed a wind farm on Hermitage Castle Hill.
another resource, same info;
Above proposed Hermitage Castle Hill wind farm by INFINIS.
It is felt that the Elwald migrated north and before the time of The Declaration of Arbroath, the ones north of the Liddel Water ended up in Scotland.