I thought Henry might be at sea, but Elizabeth (his Wife) and daughters Elizabeth and Mary should be around in 1861. I think their son Griffith Griffith was a servant in Dolgellau in 1861, but he died a year later and was buried at Llanelltyd on 26th July 1862. The daughter Elizabeth married William Washington on 23rd December 1867 (though Henry is not shown as deceased on the marriage certificate), but I can't find either of them after that? The other daughter married her first cousin George Wynne Williams in Llanelltyd on 12th March 1863 when she was only 17, so not something that would happen today. However she had died by 1876, as George remarried.