In 1608, he was elected Lord Mayor of London. During his mayoralty, the reconstruction of the Aldgate, one of the four principal gates of the City of London, was completed.[4] Weld's name as Mayor appeared on the gate itself, and in connection with an engraving of the gate produced later. He was president of Christ's Hospital from 1609.[5]
The Latin inscription on his tomb, together with long poetic epitaph, which were in the south aisle of St Olave, Old Jewry, are recorded in Anthony Munday's edition of John Stow's Survey of London. The heraldry for Sir Humphrey is shown as a quartering, 1 and 4: Weld, 2: Button als Grant, 3: Fitzhugh, with a cadency mark of a martlet (fourth son) at the central crossing of the quarters.[6]
Sir Humphrey married first, Ann Wheler (daughter of Nicolas Wheler), the mother of his children; and secondly Mary,[7] one of the three daughters of Sir Stephen Slaney,[8] Lord Mayor for 1595 to 1596.[9] His children (by Ann) are shown as follows in the Visitation of Middlesex:[10]
Joan Weld, eldest daughter. In 1597 she became the first wife of Sir Robert Brooke of Cockfield Hall, Yoxford, Suffolk. She died aged 38 and was buried at Yoxford church in May 1618.[16]
Anne Weld, married first, Richard Corbett of Stoke, Shropshire; after his death, her jointure was arranged in December 1617 in anticipation of her marriage to Sir James Stonehouse (died 1638).[14][12][15][17]
John Stow, ed. A.M., H.D., etc., The Survey of London: contayning the orignall, increase, moderne estate, and government of that city, methodically set downe (Elizabeth Purslow, London 1633), pp. 290-91 and p. 594 (Internet Archive).
'Weld of Arnolds', in G.J. Armytage (ed.), Middlesex Pedigrees, as Collected by Richard Mundy in Harleian MS. no. 1551, Harleian Society LXV (1914), pp. 25-26 (Internet Archive).
'Site of Weld House', in W.E. Riley and L. Gomme (eds), Survey of London, Vol. 5: St Giles-in-The-Fields, Pt II (London 1914), pp. 93-97 (British History Online) [accessed 2 September 2020].
In her will of 1623 (P.C.C. 1623, Swann quire), Dame Mary Weld describes John as "my son-in-lawe Sir John Weld knight deceased" and Anne as "my daughter-in-lawe the Lady Stonehouse": meaning "stepson" and "stepdaughter".
Memorial Inscription to Joan Brooke, Yoxford church, Suffolk: "Hic jacet sepulta Domina Johanna Brooke uxor Roberti Brooke Militis: quae fuit primogenita filiarum Humfridi Weld Militis vixit annos triginta octo et obijt xxij die Maij Ano: Dnī. 1618".