Who wrote the Wedding March recessional music?

Before modern times, when people decided to do things "differently ", this was invariably played at UK weddings. The structure of weddings was almost always a church ceremony followed by standard sit down reception. If you were affluent, your parents could afford a hotel for this, more commonly a village hall/pub where everyone had a great "knees-up", slang for partying!

Funny that the music notation shown in the question is “Twinkle, Twinkle Little Star “.

does it seem very much like a requiem to anyone else

BlueEyedAlien, have just looked up Wagner, and it turns out that he wasn't alive when the processional music was used at the wedding of princess Victoria.... ok so I have to tell you, you are wrong. ok

here comes the bride!

And the traditional processional music was written by Wagner.

you get what you ask for when it comes to the royals!!!