Oops. I got the wrong Robert McTeer. You will find yours on page 195 in Frances Davis McTeer's The McTeers-Mateers of Cumberland County Pennsylvania.
His father was James McTeer, origin unknown, and his mother was Jeanette McTeer, daughter of Robert McTeer and Agnes Martin, both born in Penn. (he in Cumberland Co.) and died in Blount Co., TN, buried in Eusebia Presbyterian Ch. Cemetery. If any kin it was distant.