Hi,

What do you mean about "title in Soledad theme"? Do you mean about the "Soledad" display on the top?

If so, it's logo and it's an image - You can replace it with your logo via Customize > Logo and Header Options > "Upload Logo" & "Logo for Vertical & Mobile Nav"

Have a lot of way to help you create a logo, you can search on google for keywords "create logo online free" - a lot of website helps you do that.

Best Regards,

PenciDesign