No, just because you share a surname it does not mean you are related.

its nicola by the way !! and her surname is Roberts ...

No, Julia Roberts and Doris Roberts are not related.

Julia Roberts is the daughter of Walter Grady Roberts and Betty Lou Bredemus. Doris Roberts was born Doris Meltzer and took her step-father's surname.

Kara Knack is about 67 years old (born 1947).

She never used the surname Roberts. Pernell Roberts, her husband, was 18 years older.

Jones is by far the commonest surname in Wales - so if you like common, Jones is best.

Other common surnames in Wales include Williams, Owen, Griffiths, Davies and (in the North) Stevens and Roberts.