You have at least one <Ref> instead of <ref> (size matters).
You have a number of <ref/> instead of </ref>
You have a strange method of adding citations, so I did not actually change anything, or I'd still be in edit mode changing things to "my way". 
FamilySearch offers full citations that can be simply copied there, and pasted here. Example, you added a link (https://www.familysearch.org/ark:/61903/1:1:M7Q7-2H1), when what you should have added was :
"England and Wales Census, 1841," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:M7Q7-2H1 : 25 May 2019), Thomas Carter in household of Warren Carter, Northamptonshire, England, United Kingdom; from "1841 England, Scotland and Wales census," database and images, findmypast (http://www.findmypast.com : n.d.); citing PRO HO 107, The National Archives, Kew, Surrey.
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The above citation can be added to its associated statement using the <ref>tags</ref>
You also have a link to the sources page on FS (not recommended), rather than the actual sources themselves (recommended).
Aside from the ref tag issue, all your headers are level 2, when only Biography and Sources should be - and your "Note" should ether be == Research Notes == or just a bolded note, or a smaller header size if it's not a Research Note.
Other than that, you're doing a decent job of getting and attaching sources/citations. 
Just watch those closing </ref> tags, to make sure the slash is in the right place.
