Thanks for the Regimental Births Shaun J
I thought there was a website that had Regimental Births, Deaths and Marriages somewhere but couldn't remember which one it was.
I don't know why I said Charlotte would be Fredericks half sister, he could well be a child of Samuel and Charlotte as well.
Have viewed the 1851 Scottish census for Samuel TUCKWELL 35 Music Teacher and he is shown as married so where were his wife rest of his family in 1851

Leonie