Out of 1,037 matches, I have 15 predicted 3rd cousins. Interestingly, I have more (18) predicted second cousins.
Announcement
Collapse
No announcement yet.
How many suggested third cousins do you have in Family Finder?
Collapse
X
-
Originally posted by Ann Turner View PostWhile it is certainly possible to have a known 3rd cousin sharing just one long segment, I suspect those are outliers. I feel much more comfortable with 3rd cousin predictions based on more than one shared segment over 5 cM in size.
Comment
-
-
I have 198 matches total including my brother and a 2nd cousin I recruited and paid for. Excluding them, out of 196 matches I have 7 predicted 3rd cousins.
1 of those is now a confirmed 3rd cousin, and we share 4 segments >5cM. Total shared is 70.47 and longest is 23.46. Interestingly, he doesn't match my brother.
Of the other 6, 3 are adopted and we've got too little to go on to figure out the connection; 1 has never responded to my emails. The other two we've worked pretty hard but haven't figured it out yet. 1 of them shares segments in common with my 2nd cousin and me, which would seem to narrow down our search, but there are just too many holes in the family trees, I reckon...
Comment
-
-
Averages of 19 examples in this thread (excluding posts where I wasn't sure of total matches):
3rd cousins: 4.42
Total Family Finder matches: 148.31
___________________
(Excluding the one example with the (15) 3rd cousins and (1037) Total FF matches -
3rd cousins: 3.83
Total Family Finder matches: 98.94)
Comment
-
-
I have 10 predicted thirds of 488 total. One is an actual second cousin once removed, while all the others are not yet worked out but they must all be farther beyond (with one exception, an adoptee).
The big difference between the second once removed is the size of the first block (44 cM vs. <25 for all others), and a second block of 14 cm (while most have no second block nearing this size).
The other element of note is seven of the ten predicted third cousins share the same block on chromosome 14, pos 37m-60m. Sure, there could be a prolific ancestor, but I wonder if there might be a common large mutation in this area, or, alternatively, there's a highly selected-for area.
My guess is of the 10, those seven are much farther, leaving as close the one I know about and the other two as actual close matches. One of those remaining two is a 34/37 yDNA match and is an adoptee, while the other might be as close as a fourth cousin once removed or so.
Comment
-
-
Zero 3rd cousins of 108.
The rest are 4th to distant cousins. Attempts with the highest three matches to find an ancestor in common have not met with success. This, even though my highest match has the same surname as my mother (Williamson). Just coincidence unfortunately - they from Northern Ireland; our line from the Shetland Islands.
Based on the surnames (of those who submitted any) it would appear that most of all 108 are identical by state - or from the same population (largely eastern England) that is not going to be helpful genealogically.
My known half third cousin once removed is there as a 4th to distant cousin. We share one block that is over 7 cM (same as 23andMe), and one previously unknown block of 3.56 cM which I would normally ignore, but it is in an area triangulated with other cousins via longer segments - so we know its origin.
DKF.
Comment
-
Comment