Cornelius Waldo (ca.1624-1700/1701) immigrated from England to Ipswich, Massachusetts before 1647, and married Hannah Cogswell before 1651. Descendants and relatives lived in New England, New York, Pennsylvania, Maryland, Ohio, Iowa, Wisconsin, California and elsewhere. Includes some ancestral data to about 955 A.D. in England.
Lincoln, Waldo. Genealogy of the Waldo family : a record of the descendants of Cornelius Waldo of Ipswich, Mass. from 1647 to 1900. Worcester, Mass. : Press of Charles Hamilton, 1902.
There are separate links for each of the two volumes at the Internet Archive (data current as of 15 April 2011.