Paternal side DNA mapping progress (lack thereof) snapshot

Decided to stop work on the DNA matches temporarily and produce a snapshot of DNA segments (10cMs and above) identifiable as being Paternal (see embedded WikiTree Widget below for Dad's pedigree) and able to be allocated to a grandparent, or not as the case may be (see the Chromosome Map Key).

Way too many grey spaces as yet!

Update: I forgot to add the "why".
By identifying as finely as possible where each bit of my dna comes from, it gets much easier to slot new matches into place.
Those of them matching at a spot that therefore looks to be a hint to a brickwall ancestor is then a prime target for further investigation as to how our trees may connect, and/or for any commonality between the trees of the matches at that spot for further leads on the connections.

The prime paternal brickwall ancestors:
Archibald HENDERSON blacksmith at the Bridge of Allan married 1804 to Margaret McEWAN from the Drip Moss, Kincardine by Doune
Amelia MILLAR, born Kippen, Stirlingshire about 1815, mother supposedly Miss CHRYSTAL
John DAVIDSON born Chirnside, Berwickshire about 1817 mother Ann COLLINS .

Some day I'd also like to find out more about:
Jane WIGHT's WIGHT side, Jane being the wife of Peter SINTON
Ann ROBINSON, mother of Walter FAIRBAIRN

Click on the image to enlarge, and check below for an interactive pedigree overview linked to WikiTree

 Looks like I need to recruit more cousins back up from my paternal grandmother Agnes Manson DAVIDSON - ie my Caithness BAIN and MANSON etc lines, or more FAIRBAIRN/DAVIDSONs, where the latter are in rather short supply.
Good sale on at FamilyTreeDNA until the end of the month - give yourself, and me, a Christmas present-  FamilyFinder down to $59US - any takers?

Paternal Grandfather Archibald HENDERSON:

embeddable family tree updated live from WikiTree

Paternal Grandmother Agnes Manson DAVIDSON:

embeddable family tree updated live from WikiTree

Chromosome map update

Inspired by the GRAHAM dna story over the last two posts (and finally figuring out an easier way to produce the formatted data required), here's the current state of own chromosome maps.
I don't yet know whether any traces of this GRAHAM dna can be detected in my own genes (as opposed to my maternal aunts') as not all of those involved have uploaded to GEDMatch, yet, for the smaller segments to be checked.

The links to the respective surnames involved are to one of WikiTree's wonderful DNA features.
Just some of the more distant lines identified are added as labels on this post.

Paternal side map, ie my Dad's HENDERSON and DAVIDSON ancestry (Surnames involved):

Maternal side map, ie my Mum's ANDREWS and ROWE ancestry (Surnames involved):

Quite a few empty spots to go yet, not sure I'll live long enough to fill in all the gaps.

Marriage found; dna*2 day

Ross's hunch, back in 2003, from the 1841/2 Grenville census, that David, son of David and Jane (WILLIAMSON) FAIRBAIRN was married earlier than to Charity, looks accurate. At that time the census merely showed how many people of what sex, age and marital status were in the household, and it implied that David and a young wife were in the house, although David and Charity didn't marry until 1845, and her age didn't match that of the other married female in the house besides Jane, David's mother.
While looking for something else, as so often happens, I stumbled upon a marriage in 1841 of a David FAIRBAIRN and Prudential ARNOLD in the Presbyterian Church records in the Drouin colleciton showing they were married at "Grenville, Ottawa" by William MAIR, Minister of Grenville & Chatham, witnesses were John BLAIR and John TOPLAND.
In the same set of records were David and Charity's marriage, and the baptism of their son David.

The FAIRBAIRN DNA project is looking set to examine more closely the "cousin" relationships that have so taxed my brain and genealogical inventiveness. William has joined as a rep. of the line of John A FAIRBAIRN Snr of Stillwater, whose son John A of Hoquiam is the one these relationships were all reported to: Angus s/o the above David and Charity (WALKER) F.; Albert who emigrated from Sunderland to Hoquiam, an unlikely choice about 100 years after John Snr's parents had left Scotland; and Walter to Clarissa.
How I currently see these relationships can probably best be viewed starting at the dna oriented descendant chart for David and Jane (WILLIAMSON) FAIRBAIRN, and from the charts listed on William's dna page, not that his results are in yet, as the kit has only just been ordered, patience (not one of my strong points)!

It is obviously a dna day today. We now have a DAVIDSON representative who has been enrolled in the DAVIDSON project (not one of mine), that just might help us break thru the brick wall of finding more about John DAVIDSON. Although I strongly suspect he was the illegitimate son of the mother Ann COLLINS shown on his death cert, his father was more as like a DAVIDSON given the naming conventions of the time.