The 31-year-old said she had been on a “journey of personal development” that included meditation and dance.
"Sitting on that park bench, it dawned on me that a self-marriage ceremony witnessed by other people would potentially be this massively powerful means of making those agreements stick," she told The Guardian.
She told the paper she had been single for almost six years, and while worrying that a relationship with someone "seemed like too much work", decided to recognise her period of self-discovery.
Gelder revealed the vintage dress she wore for her wedding was purchased from a local market only a couple of days before.
Concluding her account of the ceremony, she declared:
I really don't see it as any kind of feminist statement, but creating a wedding of this kind on my own terms felt incredibly empowering..
My self-married status – meaningless though it may remain in the eyes of the law – has also given me this great sense of clarity. I seem to sense much more clearly than before if something is worth pursuing or best left alone.
And just because I married myself, it doesn't mean that I'm not open to the idea of sharing a wedding with someone else one day.