May i ask what other family names are linked to your "Roelof/ Roelofsen" ???? There may be a link and i'd like to exchange what info there may be.... The following names are linked to my family Roelof family name : Vos, Doek,Klasen,Hndriks,Lukas,Jans,Harmens...... and with the family name Roelofsen : i have van Dijk.
Please let me know if there is a link as i'll send you what i have.