Unfortunately, chances are you’re not related to actress Catherine Zeta-Jones or singer Tom Jones. But there is a rich history behind your Welsh surname, a history that will be important to know about when you’re tracing your ancestors. What’s in a name?: There’s a reason why many people with Welsh heritage share the same surname without even being related: patronymics. Back in times of old, Welsh people didn’t have surnames as we consider them today. In the past, instead of…