Just list your Pedigree back to your earliest verified (paper trail) Marselis/Marsalis/Merselis/Marseilles/or any of about 10 Variant Spellings I have found on original documents just for this particular line.
It is free. You may find some connections. We may connect NY, NJ, and Canada. We may in some cases connect with Europe.
Only males who bear the Marsalis/Marselis and variant spellings need to test.
We need descendants of other lines!
The three males who have tested so far are all descendants of 3 different sons of Peter Hutchins Marsalis and Mary Magdalene Gordon Marsalis. His pedigree and his descendants'pedigrees are posted at the site.