| Drummond of Cromlix (Lordship) |
William Drummond - Fri 16th Aug 1686
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| of Dublin (Earldom) |
Henry Frederick - Wed 22nd Oct 1766
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18 September 1790 |
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| of Dublin (Earldom) |
Edward - Wed 24th Apr 1799
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23 January 1820 |
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| of Dudhope (Viscountcy) |
John Scrimgeour - Wed 8th Sep 1660
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| of Dumfriesshire (Marquessate) |
William Douglas - Fri 3rd Nov 1684
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| Dunboyne (Barony) |
William Grimston - Mon 29th May 1719
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| Duncan (Barony) |
Adam Duncan - Mon 30th Oct 1797
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5 December 1933 |
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| of Dundaff (Viscountcy) |
James Graham - Sun 24th Apr 1707
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| Dundalk (Barony) |
Ehrengard Melusine von der Schulenburg - Thu 16th Jul 1716
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10 May 1743 |
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| Dungan (Barony) |
William Dungan - Tue 14th Feb 1662
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14 December 1715 |
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| of Dungannon (Earldom) |
Ehrengard Melusine von der Schulenburg - Thu 16th Jul 1716
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10 May 1743 |
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| of Dungannon (Marquessate) |
Ehrengard Melusine von der Schulenburg - Thu 16th Jul 1716
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10 May 1743 |
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| Dungarvan (Viscountcy) |
Richard Boyle - Fri 16th Oct 1620
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| Dunglas (Lordship) |
Alexander Home - Fri 4th Mar 1605
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| Dunkellin (Barony) |
Ulick Burke - Sun 1st Jul 1543
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12 April 1916 |
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| Dunkeron (Viscountcy) |
Henry Petty - Sat 29th Apr 1719
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17 April 1751 |
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| Dunkeron (Barony) |
John Petty - Thu 7th Oct 1751
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| Dunluce (Viscountcy) |
Randal William MacDonnell - Sun 19th Jun 1785
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| Dunmore (Barony) |
Richard Preston - Thu 11th Jul 1619
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28 October 1628 |
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| of Dupplin (Viscountcy) |
George Hay - Wed 25th May 1633
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