| Bernard (Viscountcy) |
Francis Bernard - Fri 29th Aug 1800
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| Bessborough (Barony) |
William Ponsonby - Thu 11th Sep 1721
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| of Bessborough (Earldom) |
Brabazon Ponsonby - Tue 6th Oct 1739
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| Blakeney (Barony) |
William Blakeney - Sat 18th Dec 1756
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| Blarney (Barony) |
Charles MacCarthy - Wed 15th Nov 1628
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| Blayney (Barony) |
Edward Blayney - Thu 29th Jul 1621
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| of Blesington (Earldom) |
Charles John Gardiner - Fri 12th Jan 1816
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| of Blesington (Earldom) |
William Stewart - Tue 7th Dec 1745
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| Blesington (Viscountcy) |
Murrough Boyle - Wed 23rd Aug 1673
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| Bloomfield (Barony) |
Benjamin Bloomfield - Sat 14th May 1825
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17 August 1879 |
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| Blundell (Barony) |
Montagu Blundell - Fri 22nd Nov 1720
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| Blundell (Viscountcy) |
Montagu Blundell - Fri 22nd Nov 1720
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| 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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| Bowes (Barony) |
John Bowes - Tue 15th Aug 1758
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| Boyle (Viscountcy) |
Henry Boyle - Sat 17th Apr 1756
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| Boyle (Barony) |
Murrough Boyle - Wed 23rd Aug 1673
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| Boyle (Viscountcy) |
Lewis Boyle - Mon 28th Feb 1628
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| Boyle (Barony) |
Richard Boyle - Tue 6th Sep 1616
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| Boyne (Viscountcy) |
Gustavus Hamilton - Fri 20th Aug 1717
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