KOHL & COHL, International search of relatives who bear this surname

COHL or KOHL: Descendants of Nachman Kohl & Malka Fogel Nadel Kalisz, Governia, Poland (1850-1890+)
International search of relatives who bear this surname:
We are trying to locate direct or indirect descendants or close relatives there might be, of a Kohl (now Cohl, in Chile) family.
We are specifically speaking of Nachman Kohl & Malka Fogel Nadel. Both, and their 13 children, were native of Kalisz, Governia, Poland.
The 13 children of Nachman Kohl, were:
a) with his 1st. wife, LAIA (Leah) BLACH:
1. - Rifka (Rebeca)
2. - Hersz (Jerman in Chile, our great-grandfather)
b) with his 2nd. wife, MALKA FOGEL NADEL:
3. - Pesse (Paulina in Chile, our great-grandmother)
4. - Reische (Raquel)
5. - Roza
6. - Gilte Gusta (Augusta in Chile, our great-grandmother)
7. - Abraham (Adolfo in Chile, no news about him)
8. - Bajle (Bella/Berta)
9. - Mojzesz (Moisés)
10. - Szmul (Samuel)
11. - Salomon
12. - Jette (Janette)
13. - Benjamin
There are approximately 200 direct blood descendants of 3 children of Nachman Kohl and Malka Nadel, and we have lived in Chile (South America) for many years.
We have all met by chance recently, in September 2007. Some of them do not know, and others are not interested, but a group of them have taken up this initiative seriously.
We are now trying to re-unite our origin and true roots, and, hopefully, more of our Cohl or Kohl relatives. Between 1860 and 1890, approximately, with a Russian citizenship letter and at intervals, four Polish brothers began their arrival in Chile. They were all children of Nachman Kohl and Malka Nadel. They never went back to their native land in Kalisz, Poland, nor did they ever see their parents again.
Upon their arrival in Chile, it was not possible for them to reveal their Jewish origins due to the culture of society at the time, a fact which is of no importance to us now. There is no political or religious interest in this initiative of ours.
Our motivations are strictly due to family reasons, of seeking out our far-away Kohl or Cohl from Kalisz relatives in other places in the world as well as getting to know the truth. We have the right and the obligation to do so.
Our contact e-mail is: descendientescohl@gmail.com