found some information - there were two martin martens recorded on the Shakesphere leaving from different ports. Not sure how that happens.

Martin Martens, birth year about 1870;
ship name Shakesphere;
port of departure liverpool, england;
port of arrival brisbane;
3 aug 1871 and

Name:-Martin Martens;
Age:-1;
Birth Year:-abt 1870;
Ship Name:-Shakespeare;
Port of Departure:-Hamburg, Germany;
Port of Arrival:-Hervey Bay; Maryborough;
Arrival Date:-3 Aug 1871