R1b is the most common haplogroup in Western Europe with especially high incidence in Spain, Portugal, Western France and Ireland. The modal, (or most commonly occurring haplotype), for this R1b of Western Europe is called the Atlantic Modal Haplotype, (AMH), Ysearch ID, C7BED. For more information on AMH see the Links page.
The first 25 markers of AMH in Ysearch format are:-
AMH - DYS Marker Values
393
390
19
391
385a
385b
426
388
439
389_1
392
389_2
458
13
24
14
11
11
14
12
12
12
13
13
29
17
459a
459b
455
454
447
437
448
449
464a
464b
464c
464d
9
10
11
11
25
15
19
29
15
15
17
17

Because of the large number of males that fall within this haplogroup, efforts have been made to find clusters that show differences in the Short Tandem Repeat,(STR), of their alleles from the AMH by looking for similar variations in the haplotypes. Henwood is only one allele different from the first 12 alleles on the Atlantic model.

Reference: http://www.irishtype3dna.org/