Have you considered using a pseudonym?
I decided to use J.M.Dallimore as my writing name in 2011; it was my maternal grandmother’s name. All the other surnames in our family rate as some of the most popular in the United Kingdom. Note the use of popular – my dad always reminded us that our surname was popular, not common.
The advantages of having a less common name for writing is that it should be easier for people to find me on the web. It gives me a separate identity from everyday life, which has made me confident enough to define myself as a writer.
Three years on, I’m glad I made the decision to use the name Dallimore for writing and on social media. And it’s definitely not a common name, but hopefully will become popular.