I believe my ancestor's sister is the Isabella Taylor nee Wearden in Lancaster in 1851

1851 census: 2 Thurnham Street, Lancaster (HO107 / 2272, f 407, p 25)
Elizabeth Taylor, head, wid, 70, born Bolton-le-Sands, Lancashire
Jane Taylor, dau, un, 40, upholsteress, born Kirby Lonsdale
William Taylor, son, mar, 30, coach maker, born Tatham, Lancs
*** Isabella Taylor, son’s wife, mar, 23, (formerly Servant) born Hornby, Lancashire
Mary Taylor, dau un, 27, upholsteress, born Lancaster
Jane Elizabeth Taylor, grand-dau, 3 months, born Lancaster

I think her birthplace ought to be "Thornley" near Goosnargh, but the enumerator mis-read his notes (it's clearly Hornby on the census page)

The marriage was Blackburn 2Q 1850, and there was a probable child William Taylor born Lancaster (mmn Wearden) in 2Q 1852.

The mother-in-law and one sister-in-law were still in Lancaster in 1861 (RG 9;Piece: 3156; Folio: 106; Page: 5)

Where did Isabella and her husband go after 1852? Can't find any more children mmn Wearden, and no likely-looking death registrations for her. Thinking they might have followed the railways to carriage-building works I have just looked for Isabella Taylors in Scotland in 1861 without success.

Any ideas welcome.
Barbara