I have been doing some searching today to answer your questions, I have found the following....William Marshall b 29 May 1799 in North Newbald who married Hannah Walker in 1833, which makes me think Ann Sophie Medd could be his 2nd wife they married in 1841 York, my ancester come from the Howden /North Cave area and we have a Mary Medd married to William Blanshard and the the 1881 cenus it states living with them William Marshall Father in Law aged 82.
now I wondered if Ann Sophie was Mary;s sister/relative I can not find trace of her birth. I thank you for your kind offer to look this up William Marshall Married Ann Sophie Medd 1841 records at York it is Medd & not Mead as I have that confirmed on my great G/Fs birth certificate, I am going to go into Borthwick at York University when I have complete my list of look up's
Thank you Helena. PS Nth Newbald is in the Howden Area