Thank-you Roy for the information. I did not know the dates of birth of the children of William Casement and Elizabeth Crowe, so this is useful. However, the documents I have seen relating to William Casement and family have not mentioned a Robert. I have seen mentioned two other, older Robert Casements from Lezayre, one who died around 1708 with a sister Betty and brother Thomas, secondly a Robert who had a grown up daughter margaret in around 1699.