Searing and Annette appear on the 18 Aug 1870 Census, thus they were married some time before that.
1870; Census Place: Greenburgh, Westchester, New York; Roll: M593_1114; Page: 392B; Image: 784; Family History Library Film: 552613 page 200. Post Office: Dobbs Ferry Occupation: Soda Water Manufacturing. Dwelling #1170-Family #1448