Thank you TreeSpirit, I wouldn't have a cat in hell's chance of understanding all of this. I can understand the Family Search doc as it's in French! but the rest is beyond me, so thanks for the explanation.
There is no mention of Ireland on this Ostend stuff, which I find a bit worrying as the roots were in Ireland not England. The Corsham , Wiltshire idea doesn't seem to fit.
I'll try to find something on Richard King, mariner in case this throws any light on the matter.
This is my mum's line and her DNA shows 85% Ireland and 11% Europe West, so perhaps this is her little bit of Europe!
Thanks so much for your time
Kathy