| Bourke (Viscountcy) |
John Bourke - Fri 20th Apr 1629
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12 April 1916 |
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| Bourke (Barony) |
Theobald Bourke - Sat 17th Feb 1618
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- |
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| Bowes (Barony) |
John Bowes - Tue 15th Aug 1758
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- |
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| Boyle (Viscountcy) |
Lewis Boyle - Mon 28th Feb 1628
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- |
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| Boyle (Barony) |
Richard Boyle - Tue 6th Sep 1616
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- |
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| Brabazon (Barony) |
Edward Brabazon - Tue 19th Jul 1616
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- |
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| Braco (Barony) |
William Duff - Thu 28th Jul 1735
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29 January 1912 |
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| Branden (Barony) |
Maurice Crosbie - Sat 16th Sep 1758
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- |
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| Brereton (Barony) |
William Brereton - Sat 11th May 1624
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- |
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| Bridport (Barony) |
Alexander Hood - Fri 14th Nov 1794
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- |
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| Brodrick (Barony) |
Alan Brodrick - Sat 13th Apr 1715
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- |
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| Broghill (Barony) |
Roger Boyle - Mon 28th Feb 1628
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- |
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| Brouncker (Viscountcy) |
William Brouncker - Thu 7th Sep 1645
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- |
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| Bulkeley (Viscountcy) |
Thomas Bulkeley - Wed 6th Jan 1644
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- |
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| Butler (Viscountcy) |
Theobald Butler - Mon 4th Aug 1603
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- |
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| Caledon (Barony) |
James Alexander - Sun 6th Jun 1790
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- |
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| Callan (Barony) |
George Agar - Fri 4th Jun 1790
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- |
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| Carbery (Barony) |
George Evans - Thu 9th May 1715
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- |
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| Carew (Barony) |
Robert Shapland Carew - Fri 13th Jun 1834
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- |
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| Carleton (Barony) |
Hugh Carleton - Thu 17th Sep 1789
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