No. They are not at all related.
Matt Smith calls her Kazza
yes
yes
livejournal.com
Yes.
No he isn't but Karen Gillan is expected to go.
yes, i can tell, if she wasn't then her cousin (Caitlin Blackwood) would probably not be in the series 5 of doctor starring Matt smith and Karen gillan
Karen and Arthur are leaving at the end of series 6, Matt will be in series 7, there is no information about series 8.
He was in love with Karen Gillan but now where she is wearing her underwear in magazines and things like that he is getting less and less interested. Plus he already has a girlfriend Mandy Lowe. I think that's her name.
It's been confirmed that she will be returning in series 6 along side Matt Smith.
Don't konw, but looking at the pictures it's quite obvious theres a connection.
Not that anyone knows of - he dated Daisy Lowe on and off for eighteen months and Karen was with her boyfriend for five years and was confirmed in November 2011 they had both split from their partners. Matt breaks from Daisy Lowe: http://www.dailymail.co.uk/tvshowbiz/article-2065637/Daisy-Lowe-Matt-Smith-split-actor-calls-time-18-month-relationship.html Karen breaks from Patrick: http://www.dailymail.co.uk/tvshowbiz/article-2087779/Karen-Gillan-boyfriend-split-Doctor-Who-actress-Patrick-Green-break-up.html