My grandfather Walter Garatley Vasey married Mary Jane Boak in Newcastle upon Tyne in 1894.
Mary was one of the children of Robert Boak (b. 1829, Rothbury) and Elizabeth ne Mitchinson who married in 1851.
I have also been unable to trace Robert's father. While his marriage certificate says this was a Robert Boak and that he was a farmer I believe Robert junior was in fact illegitimate and that he was the son of Jessie Boak b 1812 in Berwick on Tweed. Jessie was the daughter of William Boak and his wife Barbara ne Donkin.
William Boak b. 1757, Lazonby, Cumberland married Barbara Donkin in 1789, Newcastle upon Tyne. Childen:
Samuel b. 1789 Isabella b. 1791 William b. 1793 John b. 1794 Robert b. 1795 Barbara Ann b. 1798 Edward b. 1800 Christopher b. 1802 Anne b. 1806 Catherine b. 1807 Mary b. 1810 Jessie b. 1812 d. 1853, Rothbury
In the 1851 census Jessie was living in Rothbury as an assistant house servant.
The Rothbury Parish Magazine records Barbara Ann Boak b. 1798, daughter of William Boak, Ironmonger, native of Lazonby bu his wife Barbara Donkin, daur of Samuel Donkin, native of this parish.
William Boak above was the son of John Boak b. 1735 and Catherine ne Gaskin who were married in Carlisle in 1750. Children: Sarah b. 1751 Margaret b. 1754 William b. 1757, Lazonby