Yes, your name does have those connotations. See "dub" in eDIL:
> Sent: Thursday, May 31, 2018 at 10:59 PM
> From: odubhainsr <[log in to unmask]>
> To: [log in to unmask]
> Subject: Re: [OLD-IRISH-L] Dubunni
> I have always felt that some of the tribal names of Britain were very
> similar to my own tribal name.I would think the name had something to do
> with darkness, blackness or even the depths of the world. Maybe they were
> On Thu, May 31, 2018 at 4:54 AM, Martin Counihan <[log in to unmask]> wrote:
> > Arising from a discussion outside this list, I have written a short paper
> > on the (Irish!) name of the Dobunni.
> > A copy is here:
> > http://www.counihan.org/dobunni.pdf
> > All comments welcome.
> > Regards,
> > Martin Counihan