unrelated

adj

1. Not connected or associated.

   “The holiday started with two unrelated mishaps.”

   “I was having lunch with Jim the other day, who's just had his first kid. Oh, and on a completely unrelated note, there's a new cinema opened up in town.”

   “Mr. Levi may have been bedeviled by buried conflicts unrelated to Auschwitz.”

2. Not related by kinship.

   “He had the same surname as me, but we were unrelated.”