Sentence:  [...] rooms taken up by Mr. Newton one of his Mats Gent ushers for the placing of the Kings Mats wardrobe stuffe for the space of three weeks at Newmarkett To Robert Ford <WSD>underkeep</WSD> of his Mats House at Newmarkett in considracon of the want [...] 
Meaning of the word marked with <WSD> tags:  An underkeeper, guardian, or custodian.