Here's a bit of chronology by way of round-up (which can be amended and added to of course).
BACKGROUND: EVENTS PRE-1850
1823 (22 Apr): Marriage at St Mary's, Portsea, Hants of Thomas Robert HOLLINGSWORTH and Catherine SIDNEY
1823 (25 Jul): Baptism at St George, Bloomsbury of Isabella Matilda TAYLOR (born 24 May), daughter of James TAYLOR, stationer, and Sarah, of Holborn.
1827 (27 Jan): Baptism at St Michael's, Southampton of Thomas Robert HOLLINGSWORTH, son of Thomas Robert HOLLINGSWORTH and Catherine [Other baptisms to the same couple: Elizabeth on 13 Jun 1824 and Catherine Sarah on 6 or 16 November 1825]
EVENTS IN THE 1850S
1851 census
44 Seymour St, St Pancras, Middlesex: HO107/1496/299/51
Cathn HOLLINGSWORTH Head Widow 45 Hants Southampton
Elizh do Daur Unm 25 Teacher of music Hants Portsmouth
Cathn do Daur Unm 24 Teacher of music Hants Southampton
Thos R. do Son Unm 23 Teacher of music Hants Southampton
1852 (7 Nov): Marriage at Holy Trinity, Gray’s Inn Rd of Thomas HOLLINGSWORTH, 25, dramatic artist, and Isabel TAYLOR, 24, both of Dyer’s Buildings, Holborn. His father: Thomas HOLLINGSWORTH, dramatic artist; her father James TAYLOR, bookseller.
1853 (21 Aug): Baptism at St George, Bloomsbury of Emily Sarah Louisa HOLLINGSWORTH (born 6 May), d/o Thomas Robert HOLLINGSWORTH, bookbinder, and Isabella Matilda, of Warwick Square
1856 (15 Jun): Baptism at St Andrew, Holborn of Katharine Elizabeth HOLLINGSWORTH (born 1 Mar), d/o Thomas Robert HOLLINGSWORTH, bookbinder, and Isabella Matilda, of Thavies Inn
1856 (Dec qtr): Birth reg of Eliza Hollingsworth WALKER, Strand
1859 (Mar qtr): Birth reg of Alice Ellen Hollingsworth WALKER, Strand