Thank you very much for the additional information. I am always hopeful of establishing this connection, but I understand that it is still premature. I guess it is possible that Alexander and Elizabeth had a first child Samuel around 1828 - that would work into the sequence for the daughter in 1830. And I agree it is certainly possible that Dinah Grayson could have been a second marriage, but without some evidence, that would be just a guess. I have sent to the GRO to obtain - hopefully - a death record for Samuel. I am fairly certain he died in Belfast around 1908-09, and I am hopeful that this record will give me an additional clue as to his mother. I will let you know if I find out anything.