Dec 5, 2007: Luck(ock)s in

Yes, as suspected, Joseph LUCOCK married sisters Annie and Agnes Gair HENDERSON, dtrs of Archibald. The latter was a witness to her sister's marriage, as was what looks like a maternal uncle, Thomas WHITE, and Joseph's brother Reay LUCOCK Junr.
Another DNA kit has reached the lab, one of the RUNCIMAN Surname DNA Project ones.