https://www.familysearch.org/tree/person/details/KJ5T-14D
Birth and death dates cited by Familysearch as "19 July 1799" and "18 March 1850", but unsupported.
Additional alleged information re wife Sarah Waters can '''not''' be trusted from this source.
'''He is seen as husband of Achsah Gaither 1811-1860'''
(For one thing it claims she was SEVEN YEARS OLD at their marriage date!!!) https://www.familysearch.org/tree/person/details/KJ5T-14D
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William Anderson was the son of Edward E(dwards) Anderson and Susan (not Susannah) Cheney.
He married Sarah Waters (born circa 1800), daughter of Nathan Waters and Mabel Macculey.
Some relevant details may be found in "Anne Arundel Gentry", pp. 489-493 https://archive.org/details/annearundelgentr00newm_0/page/488/mode/2up
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https://www.familysearch.org/tree/person/sources/KJ5T-14D is the link to census for a William and Achisia Anderson 1850 Vansville, Prince George's, Maryland, United States
Name William Anderson
Sex Male
Spouse's Name Sarah Waters
Spouse's Sex Female
Event Type Marriage
Event Date 18 Jan 1822
Event Place Anne Arundel, Maryland, United States
https://familysearch.org/ark:/61903/1:1:F4J5-H9X
Name William Anderson
Sex Male
Spouse's Name Achsah Gaither
Spouse's Sex Female
Event Type Marriage
Event Date 12 Nov 1839
Event Place Anne Arundel, Maryland, United States
https://familysearch.org/ark:/61903/1:1:F4J5-HMQ