Haselock was a Worcester apothecary.6 Abstracts of Wills in the PCC ed. J. Henry, 74. By 1619 he was prosperous enough to buy the manor and advowson of Martin Hussingtree and at his death he also owned property in Worcester.7 VCH Worcs. iv. 136, 138-9; PROB 11/186, f. 417. In the 1620s he estimated that his estate was worth about £1,000.8 C2/Chas.I/H83/34. However according to his son in law this was the size of her portion. C2/Chas.I/M32/59. By January 1621 he was sufficiently prominent in the Worcester corporation to be included in the committee which procured the city’s new charter.9 Chamber Order Bk. of Worcester, 168. When the patent was issued in October he was appointed the senior chamberlain but was replaced in April 1622 on becoming a member of the Twenty-Four and was elected mayor a year later. In the mid-1620s Haselock acted on behalf of the corporation in a dispute with the ‘six masters’, the governors of the Worcester free school and almshouses, concerning the administration of certain bequests which had become the subject of a decree issued by the local commissioners of charitable uses. As his outlay was heavy, he was reimbursed his expenses, which amounted to more than £110.10 Ibid. 215-18
Elected for Worcester in 1626, Haselock’s only committee nomination was to consider the apothecaries’ bill (4 March).11 Procs. 1626, ii. 194. When the House was called on 2 June he was among those absent without leave.12 Ibid. iii. 346. He was re-elected in 1628 but does not appear in the parliamentary records. In 1631 he paid £12 as composition for knighthood.13 E178/5726. Haselock made his will on 9 Mar. 1641. As he was without surviving children, he left his property to his nephews, though he granted a life interest in his estate to his wife. He was buried in the parish church of St. Helen’s Worcester and his wife proved his will on 5 July.14 PROB 11/186, f. 417r-v.