Wm Riley & Melcena House Anderson,Collins Co. MO

William Riley Anderson (first name might be John instead of William) and Melcena House Anderson were married in Collins Co Missouri May 4 1865.They were the parents of my grandfather.They died of typhoid fever when my grandfather was very young so little is known about them.They did have ten children.The first being born in 1867 and the last were twins born in 1887. The children were born in Texas.A census lists Mr. Anderson's occupation as teamster.The children were Sarry Jane, Ephraim, Marget, LE, John Riley, Jenny (who died young), Lou L, Arthur Aus (my grandfather) and his twin Elizabeth (nicknamed Pink).
My grandfather died years before I was born and I am seeking information on his parents before they came to Texas.