I am looking for any information on the following that were Captain's on the Great Lakes, primarily in Michigan from what I know now.

My great-greatgrandfather Nelson Gonyaw, captained the Mexoil and Panoil. His brothers Earl Gonyaw and Charles Gonyaw (also out of Tonawanda, NY). My great, great, greatgrandfather Nelson Gonyaw who died in the sinking of the Iosco in 1905 and his father Nazareth Gonyaw who also captained steamers on the Great Lakes.

Please let me know if you have any information on any of these people of if you could suggest a place that may have information. Thank you!