Romance Flanders

Romance Flanders or Gallicant Flanders is a historical term for the part of the County of Flanders in which Romance languages were spoken, such as varieties of Picard. Today the region straddles the border of France and Belgium.
Name.
In Early Modern English, Romance Flanders was also known as "Welch Flanders" or "Gallike Flanders". The original French name is "Flandre Gallicane" or "Flandre Gallicante", derived from the Latin term "Gallo Flandria" or "Flandria Gallica". 
The term "Walloon Flanders" has also been used to designate the region although strictly this would be a political rather than a linguistic designation as the local Romance dialect is Picard and not Walloon even though part of Romance Flanders lies within the Belgian political region of Wallonia. 
Territory.
In France :
In Belgium :