de Sierck Cirik, Scirick, Sercls, Sieck, Sintck, Sirck, Syrck, Sireck, Sirik, Syryck, Sirich, Surick, Sutk aep. Trever. [1439]
Jacobus de Sierck Cirik, Scirick, Sercls, Sieck, Sintck, Sirck, Syrck, Sireck, Sirik, Syryck, Sirich, Surick, Sutk aep. Trever. [1439]