>>509589866Keep in mind that the Normans are just vikings in disguise. It's in their name: Norman, from norse man. The French gave them a plot of land and asked them to learn French in exchange for the immediate ceasing of all rapes and plundering.
So it's a viking dialect of French, back when French was closer in sound to Italian and Spanish, with a Danish accent.
And this is on top of the fact that French itself is the most Germanic of all the romance languages, with a significant portion of its vocabulary coming from Frankish.
So ultimately, the marriage between English and French just made sense, it was always destined to happen