There is a deaf gene in family.My sister is deaf.I have traced the deafness to a gggrandmother Mary Bartlett who married a Huff from Kentucy.They were married in 1849 Franklin county Indiana.Mary Bartlett was the daughter or Abraham Bartlett and Clarinda Spink.So the deaf gene came with one of those two families.
However, the gene skips around, every person does not carry it, and it skips generation.That is a gene survival stategy. Associated with this gene is a brown and a blue eye.My observation is that those in my family who have mated with blue eyes do not seem affected by the gene.Those who have mated with brown eyes seem more likely to be affected.
A lot of deafness in the Cincinatti area was caused, because it was a predominantly German culture point of the "German Triangle" formed with Minneapolis and St Louis, and there were a number of German communities that were closed to outsiders.Some communities spoke only german until WWI.Business and schooling was in German.Closed communities ehance the existing genes, both good and bad.Deafness isn't such a serious problem, but other genetic mutations are.
If anyone knows of any deaf Spink or Bartlett individuals I would liketo hear about it.I am interested in the brown eye/blue eye trait in any family.