I have a John Frederick Protsman who brought his wife and 4 children from Rotterdam the 20th of Oct 1738 on the ship Thistle.They located at Easton, Williams Twp., in Pennsylvania.The last two children were born in the United States. Child #5 was born in 1740 in Buck County, Pennsylvania.Child #6 was born in 1746 but I have no location. The name has been changed several times - Brotzman, Brutzman, Protsman, Prutzman, Prutsman and Protzman which is usually linked to the families in Maryland. The Indiana State Library has two microfilms titled Switzerland County, Indiana Historical Collection. There is reel 1 and reel 2 and this information came from reel 2 beginning with item 22.