I have noticed that whenever looking up the Thurling name,the county of Norfolk is strongly featured.
My side of the Thurling family are from the Yorkshire village of Haworth,the Haworth made famous by the Bronte sisters.
As i no-longer have any contact with my family,the information i have is mainly derived from my childhood memories.
My grandfather Wilfred Thurling married Florence,who had 10(?) children.I can only remember the name's of 5, Peter,Terry,Cyril,David & the only girl,Olwynn,all of whom were born in Haworth.
The youngest child,David,is my father.He married Anne Mitchell,who was born close by in Stanbury.They had 4 children of which i am the second oldest.
As a child i was always told that our ancestors where vikings and later read somewhere that the name Thurling derived from the German name Duerling,originally from an area in the black forest of Germany of the same name.Both the German & the viking backgrounds can explain the reason why there is a large number of Thurlings in Norfolk.
I have also noticed that a the majority of Thurlings who where deported to Australia (mainly New south wales) in the 18 century where from Norfolk.
Hope you find this informative,if i find any more information i'll let you know.