Looking for my cousins

I KNOW THIS IS A LONG SHOT, BUT I’M LOOKING FOR THE GRANDKIDS OR G-G- GRANDKIDS TO THE FOLLOWING;
Wm.A. Watermand.o. b. –1900, Eleanor R. Waterman d.o.b. –1909, Anna B. or Wanna d.o.b. - 1911
My grandfather is the brother to the above names, his name is Charles H. Waterman Sr. d.o.b- Oct. of 1897 (my father is Charles H. Waterman Jr. he was born and raised in Chicago, IIL.) The parents are Wm. R. Waterman and Nellie E. (Carns) last address of Nellie, at the time of her death (6-16- 1958) was 311 church st. Clifton heights, PA.
Wm. R. Waterman died 12-28-1923. The parents of Wm. R. Waterman are Wm. J. Waterman and Mary S. Winder
The parents of Nellie are Alex G.W. Carns and Emma Fisher.

I met a cousin about 1974-75 named mark. He visited my family in Saginaw, Mich. When we were kids, he has scares on his face from a dog bite. He also, I believe is missing an eye from an accident, his mother had a stroke in the late 70’s if I remember right. Last know address was Philadelphia back when he visited my family. If you know of these names or this person, please contact me at [email protected]