William Walter Anderson: B Dec 1840 Scotland; Immigrated to NYC (Brooklyn) in 1863; Married "Mary" 1866 Died 26 Sep 1902 in Brooklyn NY
From Multiple Census "Mary" immigrated to US (Believe NY) in 1852-1853. No strong evidence for maiden name but 2 could be (Mitchell or Mitchel from Neighbor listed) or Stirrat another surname listed in household on Scotland Census 1841. Neither of these provides any proof. Have made searches of NYC archives with no clear matches.
Any help would be appreciated. See my tree for further details.