The second marriage register image that Susan Keefe kindly provided was for:
William Willis and Sarah Pask, who married on 3 February 1845 in St. Pancras Church, St. Pancras.Sarah gave her father as James Pask, a retired Publican. This contradicts the previous information found. In the census of 30 March 1851 in 20 Stanmore Street, St. Pancras (the same address given as her residence at the time of her marriage). William Willis was listed as the Head of Household; a Painter, living with his wife Sarah. Also listed was a visitor Martha Pask. This coincides with the 1841 census, when Sarah Pask was living at Queen Street, St. Pancras. She was listed as aged 25, in the household of Thomas PASK. Also listed was Martha Pask. Of course this is not conclusive, however hopefully additional information will be found to clarify this.
In this meantime, the database has been updated, and this information will be included in the next website update. Thanks to Susan for providing the marriage record.