There's a possible marriage in Marylebone Jun 1858
Thomas Wenborn Sarah Singer or Sarah Beard.
Other groom John Seward.
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6 April 1858
Thomas Wenborn, full age, bachelor, servant, 40 York Place, father Thomas Wenborn, gardener
Sarah Beard, full age, spinster, parish of St Pancras, father Isaac Beard, greengrocer
I was leaning towards Sarah Beard as the correct bride because I found her in 1851 as a nurse.
Baptism for Sarah 27 Jan 1830 (born 7 Jan) parents Isaac and Isabella, St James Westminster Middlesex.