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Here is a link to show you how authors come up with names for their characters!
Here is a link to show you how authors come up with place names.
Here's a link to how authors come up with names for the places in their stories.
Whatever last name you want is fine -- you're the writer! Here's a link to show you how authors invent names for their characters.
Here is a link to show you how authors come up with names for their characters -- you have to invent your own names if you're going to be a writer!
There are thousands of people in every University on the planet who are studying for a career in science but have yet to graduate from University. Too many names to be listed here
Here is a link to a name generating website. Authors need to learn how to make up their own character names.
whatever last name you like -- you're the author! Here's a link to how authors choose names for their characters.
Whatever name you like is a good one -- you're the writer! Here's a link to show how authors pick good names.
You'll have to come up with your own original names -- here's a link to show you how authors figure out how to name their characters.
I don't think you understand how creativity works ... there is no giant list of words that haven't been used yet! Authors invent words whenever they need one. Here's a link to show you how authors come up with their ideas.
I have found this site, I don't know how accurate it is but it might help. I was looking for Scottish names too when I found your question. Here's the URL: http://www.babynology.com/scottish_babynames.html