You are correct, Helen Syers is a descendant of David Alexander Syers, through Clinton Syers. Interestingly, my father's younger brother, Vernon McManus, married Helen Syers while my mother's cousin, Rayburn Harris, married her sister, Dorothy Syers.
I live about 35 miles from Shingleton and Munising so am able to check records and cemeteries there.
I see on your tree that you have George Syers, father of David Alexander, dying in 1836....I found one census record in 1840 that lists a George Syers in Allegany Pennsylvania and wondered if it might be him....what is your source for his death? Just wondered. Theresa McManus Neville
tneville3@aol.com