Sir John de Stanley King & Lord of the Isle of Man and the Isles, K.G. ^{1 2 3}

   Other names for John were Sir John Stanleigh, Sir John Stanley II, King and Lord of Man and the Isles and John Stanley.

  Research Notes:

of Knowsley and Lathom, co. Lancaster.
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www.whitneygen.org/archives/biography/princewm.html says this is Sir Thomas' father (mother = Isabel Harrington).
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From Wikipedia - if John [III] Stanley of the Isle of Man is Sir Thomas' father (likely):
"Sir John Stanley (c. 1386 - 1437 ), was Knight Sheriff of Anglesey , Constable of Carnarvon , Justice of Chester , Steward of Macclesfield and titular King of Mann , the second of that name.
His father Sir John Stanley , Lord Lieutenant of Ireland , had been granted the tenure of the Isle of Man by Henry IV , and the younger Sir John succeeded to the Kingdom in 1414 ."

His father Sir John de Stanley , Lord Lieutenant of Ireland , had been granted the tenure of the Isle of Man under the title of King by Henry IV , and the younger Sir John succeeded to the Kingdom in 1414 .
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Per Manx Note Book (http://www.isle-of-man.com/manxnotebook/people/lords/stanleys.htm) , responsible for codifying Manx law.
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Source: The History of the House of Stanley from the Conquest to the Death of the Right Honourable Edward, Late Earl of Derby, in 1776 by John Seacomb (Manchester, 1821) [courtesy of books.google.com], p. 229 has "JOHN Stanleigh, Knt. Steward of the Household to King Henry IV."
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  Birth Notes:

Glenda Turcks http://wc.rootsweb.com/cgi-bin/igm.cgi?op=DESC&db=nanatea&id=I33919 has b. abt 1385.

http://stanleyroots.co.uk/thenorthwest.htm has b. 1390, d. 1437

Manx Note Book http://www.isle-of-man.com/manxnotebook/people/lords/stanleys.htm has b. abt 1386, d. 1437.

  Death Notes:

Source: http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=:3143362&id=I653270087

Glenda Turcks http://wc.rootsweb.com/cgi-bin/igm.cgi?op=DESC&db=nanatea&id=I33919 has d. 27 Nov 1437.

  Noted events in his life were:

• Knight of the Shire of Lancaster, 1415.

• Justice of Chester, 1426-1427.

• Sheriff of Anglesey, Constable of Caernarvon Castle, 1427.

John married Elizabeth Harington, daughter of Sir Nicholas Harington of Farleton and Isabel English. (Elizabeth Harington was born about 1390 in Hornby, Lancashire, England and died in 1437 in Lancashire, England.)