I have a 1978 copy of "The Merwin Family in North America". Anna is listed on page 194 as the 3rd of 8 children of Heman and Anna(Brooks) Merwin. The genealogy has more descendants of Anna and her husband Charles C. Clark. Anna's lineage is as follows. Heman b Aug 1, 1767 in Haddam, CT; James b Oct 19, 1739; Daniel b Sep 15, 1714; Daniel b 1687; Miles b Dec 14, 1658; Miles. I would be happy to correspond further if you wish.