What's the word for a signature that incorporates an artistic flourish?

I remember reading years ago that there was a word for this. The only example I can think of is Liberace's signature, which famously incorporated a piano. There is a term for this, I'm sure of it.

It is called a paraph:

a flourish after a signature, originally as a precaution against forgery.[1]

[1] "paraph". Dictionary.com Unabridged. Random House, Inc. 20 Apr. 2016. http://www.dictionary.com/browse/paraph>.

Although I’d use the phrase “signed/signing with great/grand flourish” to describe this, a “flourished signature” is also apparently used for it.

(example of the phrase from ‘The American Revolution’ by Bruce Lancaster & John Harold Plumb and one of “flourished signature” from ‘The Harvard Monthly, Volume 54’, both via ‘Google Books’)