SATURDAY NIGHT GENEALOGY FUN: YOUR FATHER'S MOTHER'S PATRILINEAL LINE

I'm finally getting around to the latest Saturday Night Genealogy Fun from Randy
Seaver's Genea-Musings blog: 


Here is your assignment if you choose to play along (cue the Mission Impossible music, please!):

1) What was your father's mother's name?

2) What is your father's mother's patrilineal line? That is, her father's father's father's ... back to the most distant male ancestor in that line?

3) Can you identify male sibling(s) of your father's mother, and any living male descendants from those male sibling(s)? If so, you have a candidate to do a Y-DNA test on that  patrilineal line. If not, you may have to find male siblings, and their descendants, of the next generation back, or even further.

4)  Tell us about it in your own blog post, or in a comment on this post, or in a Facebook or Google Plus post.

Ok, here goes! 
1)My Dad's mother was Cora Berthella Barker, born 27 Oct 1899 at Bethel Me., died June 1987 at Errol, Coos, NH.

2) She was descended on both her patrilineal and matrilineal side from immigrant
ancestor Richard Barker who died at Andover Ma on 18Mar 1693. Here's the patrilineal
line of descent:

3)Cora had a half brother and three brothers:
    -Henry L Barker (1891-1969), the half brother, had a son Robert G Barker (1922-?)
    -Brother Frank W Barker  (1910-1979) had no children I can find record of as yet,
    -Brother Earl H Barker died in infancy in 1903.
    -Youngest brother Harry H. Barker (1905-1967) had one son, Percy Barker (1939-
      1985) for whom I've found no record of marriage or children.

Oh well, out of luck!