The National Archives Manorial Register says that Wolstanton comes under Tunstall Manor Court.
I have previously researched the Tunstall Manor Court rolls as part of my own family history, and have not seen Wolstanton mentioned in them.
However, if you go to the website 'Staffordshire Names Indexes', (part of the Staffordshire and Stoke on Trent Archive Service), some volunteers have kindly transcribed some of the Newcastle of Under Lyme Manor records, under which Wolstanton comes.
Go to the index 'Copyhold tenants of the Manor of Newcastle under Lyme'.
They have done 1700 - 1832 so far. No doubt there are more.
If you then search for 'Moreton', you'll see there are evidently many instances in these court rolls for the name. This is only an index, but if you scroll down, you can send for a transcription of the entries. The originals are at The National Archives at Kew. They are part of the Duchy of Lancaster records held there. There may well be entries in these rolls when Moreton fathers are passing on land to their children.
I've had a very quick look through, particularly for any that mention Ralph.
Many of the entries don't give any other information other than the name, so it's difficult to know if they are the correct person.
These ones state that Ralph is a 'gentleman' of 'Wolstanton Hall'.
24.1.1710 Ralph Junior.
TNA ref DL30/5076/2
Ralph Junior 8.5.1717
TNA ref DL 30/507/4
5.12.1716 Ralph
26.12. 1716 Ralph
15 4.1719 Ralph
18.10 1721 Ralph of Wolstanton Hall
18.10 1721 DL 30/507/5 'son and heir of John Senior' (these 2 entries are listed separately but the same reference number)
29. 7.1724 Ralph
Plus many more........
10.11.1742 DL30/507/12 'Ralph, wife Mary, son Ralph'.
You would need to go through these much more carefully - I have only looked very quickly.
You could either send for the transcripts. (it doesn't look as if it costs very much), or go to The National Archives at Kew to view the actual entries. Perhaps get the transcripts first to see if it's worthwhile going to London.
It's a shame they have only indexed back to 1700, that will have been a huge task in itself.
If you go to The National Archives site and put in the references DL 30 507, you'll see there are thousands of documents for The Duchy of Lancaster. The court Rolls prior to 1700 would no doubt be something to research further.
If you go to 'Home' on the Staffordshire Indexes Page, you'll see there are many more indexes, some of which might also be interesting.
I like to use the index for Lichfield wills - especially if you don't have a subscription to findmypast to look at them.
Although they are only an index, they do give a little information about the person whose will it is, like their places of residence and occupation, so you can see whether this may be the person you're looking for or not.
You have a lot of hours of research to do ! Good luck!