http://sharepoint.stackexchange.com/questions/164403/

//sharepoint/sites/home/_api/Web/Lists(guid'...')/Items
?$select=Title, Author/Title
&$expand=Author
&$filter=Author/Title eq 'Jon Smith'

//sharepoint/sites/home/_api/Web/Lists(guid'...')
?$select=Title, Items/Title, Items/Author/Title
&$expand=Items, Items/Author
&$filter=Id eq guid'...' and Items/Author/Title eq 'Jon Smith'

//sharepoint/sites/home/_api/Web/Lists
?$select=Title, Items/Title, Items/Author/Title
&$expand=Items, Items/Author
&$filter=Id eq guid'...' and Items/Author/Title eq 'Jon Smith'