There may be another big name strong safety on the free agent market. NFL.com's Adam Schefter reports that the Cowboys could cuy SS Roy L. Williams.
Williams is not known for his coverage skills, though as recently as 2006 he had 5 INTs. He's an old school run-stopping safety, and Cowboys watchers would like to either turn him into a LB or turn him loose. The Rams, however, have O.J. Atogwe who gives them a playmaker at FS, which would give the Rams the flexibility to have a run-stopped like Williams at SS (which also depends how they shake out at CB).
Williams turns 29 in August. He was injured most of last season, making a comeback attempt in the Cowboys loss to the Rams where he reinjured himself.