It is not very much, but I found his name in the population register 1910-1920 of Dalen, Drenthe.
The father of Hermannus was Albert Roelofs, a farmer, who came to Dalen in on October 1, 1913.
He came from the town Coevorden, where he was born.
Albert Roelofs married to Anna Zwiers on September 26, 1913 in Dalen, Drenthe.
Albert Roelofs, his wife Anna Zwiers and two children, named Roelof Roelofs, born May 19, 1915 and Hermannus Roelofs, born July 24, 1919, last line, lived in the house of his father-in-law, Roelof Zwiers.
A bad picture of the population record is attached.
Robert A. van Duuren