My computer says I'm your 5th cousin once removed.

I've got Selina's parents as William and Alice Barton (nee Blundell) married 24 November 1842 at St James Toxteth Park,
and Alice as the daughter of Miles and Rebecca Blundel[l] (nee Gorstige).

A lot of the early stuff on my tree came from Joyce Otterstrom's "Park" database on Rootsweb, this link should take you to Miles and Rebecca on her tree http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&d...

Joyce doesn't have Alice married to William Barton yet, but I'm pretty sure this is the right family.