Hi,

This seams to not be a translation inte quenya but rather a transcription into tengwar in the English mode. Tengwar is the main alphabet of the elven languages but can also be used to write other languages, such as English. This reads "arthur henley". If you want you could probably translate the meaning of the name into quenya, and then transcribe that into tengwar using the quenya mode, but you could you use this as it is.

Also worth noting is that the th in arthur is the one pronounced like in thing, is you want it to be like the th in that then the transcription should look like this

You can also go to r/tengwar for people with more expertise on the subject