Can someone help translate this seal script (I think)?

朙（明）⿰古久（故）朙威將

軍錦衣䘙（衛）⿰扌⿱刀甘（指）

揮僉事?（鄭）公

曁配?（恭）人先

鐂（鎦）氏繼楊氏

合?（葬）⿵?土（墓）誌銘

Epitaph of joint grave of Grand Ming general of the Embroidered Uniform Guard, Sir 鄭 , together with honoured first lady Madame 鎦 [passed away first] and second lady Madame 楊.

(The word choice in this translation might be inappropriate, it's very difficult to translate ancient titles across from Chinese)